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RSS Journal of Applied Mechanics Newest Issue

  • Electromechanical Instability of Dielectric Elastomer Actuators With Active and Inactive Electric Regions اسفند ۲۸, ۱۳۹۷
    Electrically driven dielectric elastomers (DEs) suffer from an electromechanical instability (EMI) when the applied potential difference reaches a critical value. A majority of the past investigations address the mechanics of this operational instability by restricting the kinematics to homogeneous deformations. However, a DE membrane comprising both active and inactive electric regions undergoes inhomogeneous deformation, thus […]
  • Riccati Transfer Equations for Linear Multibody Systems with Indeterminate In-Span Conditions اسفند ۲۸, ۱۳۹۷
    The transfer matrix method for linear multibody systems is capable of providing precise solutions for the dynamics of various mechanical systems, but it may also suffer from numerical instability in some cases, where serial chains with a large number of mechanical elements are involved or high-frequency harmonic responses are computed. Combining such a transfer strategy […]
  • Nonlinear Buckling and Postbuckling of Shallow Arches With Vertical Elastic Supports اسفند ۲۵, ۱۳۹۷
    This paper presents an analytical method to investigate the effects of symmetric and asymmetric elastic supports on the nonlinear equilibria and buckling responses of shallow arches. It is found that arches with symmetric elastic supports can bifurcate into secondary paths with high-order symmetric modes. When a small asymmetry exists in the elastic supports, the equilibria […]
  • Controllable Propagation of Bending Waves in Wrinkled Films اسفند ۲۵, ۱۳۹۷
    Wrinkling is a common phenomenon in natural and engineering film structures. The wrinkles influence the geometry and dynamic response of these structures. In this work, we investigate the wrinkling of a stretched thin film containing engineered microstructures and its derived functionality on controlling the propagation of bending waves. The underlying mechanism is revealed and the […]
  • Effect of Partition on the Mechanical Behaviors of Soft Adhesive Layers اسفند ۲۵, ۱۳۹۷
    A soft adhesive layer bonded between two rigid substrates, which are being pulled apart, may exhibit diverse instability phenomena before failure, such as cavitation, fingering, and fringe instability. In this study, by subdividing the soft layers into different numbers of disconnected smaller parts, we achieve desired instability modes and mechanical responses of the layer. The […]
  • Tunable Contact of Epidermal Electronics With Skin Based on Ionic Polymer–Metal Composite Material اسفند ۲۵, ۱۳۹۷
    Epidermal electronics mounted on the body provides the robust and noninvasive interfaces to monitor the electrophysiological signals of human body. The contact characteristic of the epidermal electronics with the skin affects the accuracy of the measured signals. In this paper, ionic polymer–metal composite is used to regulate the interface force for the consistency of the […]
  • An Innovative Approach of Using Continuous Impedance-Graded Metallic Composite System for Attenuation of Stress Waves اسفند ۲۵, ۱۳۹۷
    This paper presents an innovative approach of stress attenuation through a continuous impedance-graded material system for high strain-rate events. High energetic dynamic events such as blasts and impact could cause stress waves—in the form of elastic, plastic, and shock—to propagate in a solid material. An impedance-graded composite is created by arranging different metallic alloys in […]

RSS Journal of Manufacturing Science and Engineering Newest Issue

  • Flatness Control of the Crossbowed Hot Plate Using Cold Roller Leveling اسفند ۲۸, ۱۳۹۷
    A crossbow is one of the shape defects caused by width differences between the top and bottom plate surfaces. To improve the plate flatness, leveling must be performed to flatten the crossbowed plate prior to the second manufacturing process. Leveling is a process for minimizing shape defects and enhancing the internal stress uniformity in shape-critical […]
  • Investigation of the Machining Behavior of Ti6Al4V/TiC Composites During Conventional and Laser-Assisted Machining اسفند ۱۳, ۱۳۹۷
    Conventional machining of Ti6Al4V/TiC composites is a very difficult process, which exhibits a peculiar cutting force pattern where the thrust forces are higher than the tangential forces. This behavior results in rapid tool wear and consequently very short tool life. This study is concerned with describing the reasons for the attendant behavior using experimentally validated […]
  • A Guiding Framework for Microextrusion Additive Manufacturing اسفند ۱۱, ۱۳۹۷
    Although extrusion-based 3D printing processes have seen many successful applications at the macroscale, it has proven to be challenging for consistent, repeatable, and cost-effective printing at the microscale due to its dynamic complexities. To fully tap into the promise of microextrusion printing (µEP) of fabricating fine resolution features, it is critical to establish an understanding […]

RSS Journal of Mechanical Design Newest Issue

  • Free-Form Design of Electrical Machine Rotor Cores for Production Using Additive Manufacturing اسفند ۲۲, ۱۳۹۷
    This work presents a finite element analysis-based, topology optimization (TO) methodology for the combined magnetostatic and structural design of electrical machine cores. Our methodology uses the Bi-directional Evolutionary Structural Optimization (BESO) heuristics to remove inefficient elements from a meshed model based on elemental energies. The algorithm improves the average torque density while maintaining structural integrity. […]
  • Experimental Investigation of the Implications of Model Granularity for Design Process Simulation اسفند ۲۲, ۱۳۹۷
    Determining a suitable level of description, or granularity, for a product or process model is not straightforward, especially since granularity can manifest in multiple ways, but it is important to capture important elements in the model without building models that are too large to understand. This article investigates the implications of model granularity choices by […]
  • Topology Optimization of Periodic Structures With Substructuring اسفند ۲۲, ۱۳۹۷
    Topology optimization of macroperiodic structures is traditionally realized by imposing periodic constraints on the global structure, which needs to solve a fully linear system. Therefore, it usually requires a huge computational cost and massive storage requirements with the mesh refinement. This paper presents an efficient topology optimization method for periodic structures with substructuring such that […]
  • Design and Optimization of Graded Cellular Structures With Triply Periodic Level Surface-Based Topological Shapes اسفند ۲۲, ۱۳۹۷
    Periodic cellular structures with excellent mechanical properties widely exist in nature. A generative design and optimization method for triply periodic level surface (TPLS)-based functionally graded cellular structures is developed in this work. In the proposed method, by controlling the density distribution, the designed TPLS-based cellular structures can achieve better structural or thermal performances without increasing […]

RSS Journal of Mechanisms and Robotics Newest Issue

  • Special Section: Selected Papers From the 42nd Mechanisms and Robotics Conference at IDETC 2018 اسفند ۲۲, ۱۳۹۷
    For 42 years, the Mechanisms and Robotics (M&R) Conference has provided an international venue for presentation and discussion of the latest scientific and technical results in the broad field of mechanical systems and their applications. This includes the design (novel mechanisms and robots, synthesis), analysis (kinematics, dynamics, computational approaches, and software systems), applications (from micro-air vehicles, […]
  • A Survey on the Computation of Quaternions From Rotation Matrices اسفند ۱۰, ۱۳۹۷
    The parameterization of rotations is a central topic in many theoretical and applied fields such as rigid body mechanics, multibody dynamics, robotics, spacecraft attitude dynamics, navigation, three-dimensional image processing, and computer graphics. Nowadays, the main alternative to the use of rotation matrices, to represent rotations in ℝ3, is the use of Euler parameters arranged in […]
  • Controlling the Locomotion of Spherical Robots or Why BB-8 Works اسفند ۸, ۱۳۹۷
    Spherical robots have a wide range of self-propulsion mechanisms. Of particular interest in this paper are propulsion systems where wheels are placed in contact with the inner surface of the spherical shell of the robot. Here, locomotion is achieved by a combination of the actions of the motors along with the rolling constraints at the […]
  • Reconfigurability Analysis of a Class of Parallel Kinematics Machines اسفند ۸, ۱۳۹۷
    A novel parallel kinematics machine (PKM) stemming from the 3-SRU (spherical-revolute-universal) under-actuated joints topology is presented in this paper. The concept here proposed takes advantage of a reconfigurable universal joint obtained by locking, one at a time, different rotations of a spherical pair. Such local reconfiguration causes a slight, yet crucial, modification of the robot […]
  • Design of Compliant Three-Dimensional Printed Surgical End-Effectors for Robotic Lumbar Discectomy اسفند ۸, ۱۳۹۷
    In this paper, the design of compliant three-dimensional (3D) printed surgical end-effectors for robotic lumbar discectomy is presented. Discectomy is the surgery to remove the herniated disk material that is pressing on a nerve root or spinal cord. This surgery is performed to relieve pain or numbness caused by the pressure on the nerve. The […]
  • Sliding Filament Joint Mechanism: Biomimetic Artificial Joint Mechanism for Artificial Skeletal Muscles اسفند ۸, ۱۳۹۷
    Soft linear actuators (SLAs) make linear displacement by shrinkage and relaxation like skeletal muscles, so they can be called as artificial skeletal muscles (ASMs). They deform their body to create displacement. However, the restoring force generated by the deformation of their soft body reduces the force available from the SLA. This actuation structure is a […]
  • Experimental Validation of a Three-Degree-of-Freedom Cable-Suspended Parallel Robot for Spatial Translation With Constant Orientation اسفند ۸, ۱۳۹۷
    This paper shows an experimental validation for the design of a three-degree-of-freedom (DOF) cable-suspended parallel robot, which has six cables attached to the end-effector, arranged in three pairs, with each pair being driven by a single motor. For each pair, the moving platform attachment points and the winch cable guides on the fixed frame form […]
  • Exploiting the Kinematic Redundancy of a (6 + 3) Degrees-of-Freedom Parallel Mechanism اسفند ۸, ۱۳۹۷
    This paper presents methods to exploit the redundancy of a kinematically redundant spatial parallel mechanism with three redundant DOFs. The architecture of the mechanism is similar to the well-known Gough–Stewart (GS) platform and it retains its advantages, i.e., the members connecting the base to the moving platform are only subjected to tensile/compressive loads. The kinematic […]
  • Variable Stiffness Mechanism for Suppressing Unintended Forces in Physical Human–Robot Interaction اسفند ۸, ۱۳۹۷
    This paper presents the design of a two-degrees-of-freedom (DoFs) variable stiffness mechanism and demonstrates how its adjustable compliance can enhance the robustness of physical human–robot interaction. Compliance on the grasp handle is achieved by suspending it in between magnets in preloaded repelling configuration to act as nonlinear springs. By adjusting the air gaps between the […]
  • Active Disturbance Rejection Control for Handling Slip in Tracked Vehicle Locomotion اسفند ۸, ۱۳۹۷
    This paper describes the use of an active disturbance rejection controller (ADRC) to estimate and compensate for the effect of slip in an online manner to improve the path tracking performance of autonomous ground vehicles (AGVs). AGVs with skid-steer locomotion mode are extensively used for robotic applications in the fields of agriculture, transportation, construction, warehouse […]

RSS SOLIDWORKS Tech Blog

  • Tricks to help out Sheet Metal Fabricators through the SOLIDWORKS Flatten Tool اردیبهشت ۲, ۱۳۹۸
    This blog is all about a recent client who has been in the HVAC (Heating, Ventilation, and Air Conditioning) industry,  questioned if there was any possibility to take blank development for a 90 degree Elbow, Reducer, Wye connector etc. The Author information EGS India Managing Director at EGS Computers India Private Limited E G S […]
    EGS India
  • SOLIDWORKS Tech Tip: Wrap فروردین ۳۰, ۱۳۹۸
    Do you know how to use a scribe instead of a split line or flat surfaces or labels? Split lines, flat and labels aren’t always the best choice when trying to colour in text. An easier way might be to Author information SOLIDWORKS Dassault Systèmes SolidWorks Corp. offers complete 3D software tools that let you […]
    SOLIDWORKS
  • SOLIDWORKS Support Monthly News – April 2019 فروردین ۲۷, ۱۳۹۸
    Hello to all, Welcome to the new edition of the SOLIDWORKS Support Monthly News!  This monthly news blog is co-authored by members of the SOLIDWORKS Technical Support teams worldwide.   SOLIDWORKS Inspection Integration with SOLIDWORKS PDM By Nicole Phillips With Author information Nicole Phillips Technical Customer Support Engineer, SOLIDWORKS, Americas at DS SolidWorks Corp. I […]
    Nicole Phillips
  • SOLIDWORKS Electrical Fast Tips Part 1: Interface Configuration, 2D Footprints & Row Marking فروردین ۲۶, ۱۳۹۸
    Find fast tips and tricks to up your electrical game through our baseball Spring Training theme! Welcome to GSC’s SOLIDWORKS Electrical Spring Training How is SOLIDWORKS Electrical like everyone’s favorite game (ahem, Baseball), and a nation getting through Spring Training, Author information GSC GSC fuels customer success with 3D engineering solutions for design, simulation, data […]
    GSC
  • 3D Scanning Technologies فروردین ۲۳, ۱۳۹۸
    3D Scanning is an emerging technology but is it worth getting onto? Author information SOLIDWORKS Dassault Systèmes SolidWorks Corp. offers complete 3D software tools that let you create, simulate, publish, and manage your data. SolidWorks products are easy to learn and use, and work together to help you design products better, faster, and more cost-effectively. […]
    SOLIDWORKS
  • PDM Data Replication: Common Questions فروردین ۲۱, ۱۳۹۸
    Replicating the archives of our PDM database is not a new feature for most of us. Many companies have implemented this in their network infrastructure. You can find plenty of information in the administration guides, and using standard online searching Author information TPM TPM, Inc. is the Carolina’s largest 3D CAD provider and a leading […]
    TPM
  • 3D Printing – The First Layer فروردین ۱۸, ۱۳۹۸
    Within 3D printing getting the first few layers correct is very important as it has a knock on effect with the success of your print. In this article, we are going to discuss some of the techniques to improve your Author information NT CADCAM NT CADCAM is the UK's most established SOLIDWORKS reseller in England, […]
    NT CADCAM
  • The Tale of Two Captains: Captain Marvel فروردین ۱۶, ۱۳۹۸
    Well as many of you probably know, Captain Marvel hit theaters last month and it has been a gigantic hit. One of the people who joined the masses in the theater was our very own Marvel expert Mike Dady. After Author information Alignex, Inc. Alignex, Inc. is the premier provider of SOLIDWORKS software and partner […]
    Alignex, Inc.
  • Creating Interactive Animations with SOLIDWORKS Visualize فروردین ۱۳, ۱۳۹۸
    Interactive Images are a great export option within Visualize Professional, allowing you to view the model in a series of 360 orbital spins within a web browser. However, what happens if I want to use this interactive method to demonstrate Author information Solid Solutions Technical Team Solid Solutions commenced business as a SolidWorks Training and […]
    Solid Solutions Technical Team
  • Using SOLIDWORKS and Social Collaboration Services to Manage Your Libraries فروردین ۹, ۱۳۹۸
    One of the biggest announcements at SOLIDWORKS WORLD this year was the inclusion of SOCIAL COLLABORATION SERVICES (or SCS) at no cost with every seat of SOLIDWORKS on subscription.  SCS enables a variety of tools which allow design teams to Author information Toby Schnaars The post Using SOLIDWORKS and Social Collaboration Services to Manage Your […]
    Toby Schnaars

RSS All Construction News | The Construction Index

RSS International Construction News | The Construction Index

RSS The Fabricator's Feed

  • CRU to host Aluminum Market Update event in August اردیبهشت ۳, ۱۳۹۸
    Aluminum executives can network and discuss the state of the market with peers and industry analysts at the Aluminum Market Update in Atlanta, Aug. 28-29. Attendees of the event, sponsored by London-based CRU, a provider of business intelligence on the global metals, mining, and fertilizer...
  • Exact Metrology educates fifth graders at Career Day event اردیبهشت ۳, ۱۳۹۸
    Exact Metrology, with facilities in Cincinnati and Milwaukee, recently participated in Latonia Elementary Career Day in Covington, Ky. This event was meant to introduce students to a variety of careers in health, law, manufacturing, engineering, technology, and other fields. Fifth grade students...
  • Air Products to build, own, and operate second ASU for Big River Steel in Arkansas اردیبهشت ۳, ۱۳۹۸
    Air Products, Lehigh Valley, Pa., has announced an agreement to build, own, and operate a second air separation unit (ASU) to support Big River Steel LLC's expansion at its Osceola, Ark., steel mill. The new ASU, scheduled to be onstream in January 2021, adds to Air Products' existing ASU at the...
  • How lasers for 3D printing differ from cutting lasers اردیبهشت ۳, ۱۳۹۸
    Over the past four decades laser cutters have become the must-have machine tool for the overwhelming majority of sheet metal fabricators. From CO2 lasers to their newer and more capable solid-state cousins, what began as a 1960s-era laboratory experiment is now the preferred method of quickly and...
  • Arlington Capital Partners creates Radius Aerospace from Triumph Group’s forming and fabricating facilities اردیبهشت ۳, ۱۳۹۸
    Arlington Capital Partners, a Washington, D.C.-area private equity firm, has completed the acquisition of Triumph Group Inc.’s forming and fabrication facilities. Going forward, the business will operate independently as Radius Aerospace Inc., a provider of fabrications, forming, and other...
  • Thomas Industrial Fabrication to relocate in Virginia اردیبهشت ۳, ۱۳۹۸
    Thomas Industrial Fabrication has announced plans to move from Woolwine, Va., to Floyd, Va., bringing 28 full-time jobs to the area.The new jobs will include welders, machinists, millwrights, fabricators, mechanics, engineers, buyers, foreman, and office support.
  • Muratec’s LS3015HL Hybrid Laser اردیبهشت ۳, ۱۳۹۸
    The LS3015HL Hybrid Laser is the latest innovation in Muratec’s pursuit of value-added sheet metal processing. This multi-functional fabrication machine combines fiber laser cutting and forming into a single, highly-reliable production center. Leveraging the high-speed precision of fiber laser cutting and the accurate forming and tapping performance synonymous with Muratec’s punch press technology, this hybrid […]
  • Thermatool CFI tube, pipe welding machine delivers power output اردیبهشت ۳, ۱۳۹۸
    Thermatool offers the CFI high-frequency (HF) welder, a solid-state tube and pipe welding machine. With frequencies from 150 to 800 kHz, the machine is based on the company’s HF welding process, and the current-fed inverter (CFI) design allows users to weld almost any metal. The machine uses the...
  • Impact welding equipment developed at Ohio State debuts at Tri-Rivers Career Center اردیبهشت ۲, ۱۳۹۸
    A novel manufacturing method has proven capable of bonding dissimilar metal pairs, including aluminum to steel and titanium to steel, as well as many other advanced alloys. This new welding technology allows for lightweighting by multimaterial design and is an alternative to welding by melting. Dr....
  • DURMA’s HD-F10025/Double-Head Fiber Laser اردیبهشت ۲, ۱۳۹۸
    DURMA’s HD-F10025/Double-Head Fiber Laser machine has two fibers in two different heads, double-head fly cutting, automatic nozzle calibration, automatic nozzle cleaning, and completely customizable. DURMA takes laser cutting to the next level giving you the options of cutting with just one head, two heads, running the double heads synchronized or not, and having one head […]
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