... surface effect wave controlling electromechanical coupling factor group velocity strain gradient theory impact laminates stress analysis structures vibration wave propagation References [1] Xu , S. , Yeh , Y. W. , Poirier , G. , McAlpine , M. C. , Register...

... Division of ASME for publication in the J ournal of A pplied M echanics . 16 09 2024 13 11 2024 17 11 2024 26 11 2024 constitutive modeling of materials failure criteria impact mechanical properties of materials structures National Natural Science Foundation...

...Aakash Khandelwal; Ranjan Mukherjee The spatial variation of the coefficient of restitution for frictionless impacts along the length of a circular beam is investigated using a continuous impact model. The equations of motion are obtained using the finite element method, and direct time integration...

... be subjected to intense dynamic loading due to high/hyper-velocity impact and therefore necessitates understanding of the dynamic shear strength and kinetics for the development of constitutive models. However, while several investigations have generated Hugoniots for silicate glasses, none appear to have...

... ms. It is worth noting that the load mass is 14 kg. Smoothing of the signal can effectively weaken the impact of noise and reflect the frequency characteristics of the signal, as illustrated in Fig. 13( b ) . The shock peak appears around 10 Hz, which corresponds to the shock duration. Under...

... subjected to impact loads due to its brittle characteristics. Therefore, a steel-layered structure with different contact areas is developed as a stress wave attenuator to protect the fluid oscillator for the DTH hammer under high-temperature drilling conditions. In this paper, the stress wave attenuation...

... boundary conditions. The specimen was meshed using single point integration 8-node hexahedral solid elements. These elements are a popular choice in modeling impact and large deformation problems [ 44 ]. One end of the specimen was constrained using fully fixed boundary conditions whilst the boundary...

.../501100001809 52005331 elasticity impact structures 31 03 2022 05 04 2022 05 04 2022 12 05 2022 Contributed by the Applied Mechanics Division of ASME for publication in the J ournal of A pplied M echanics . Email: y-huang@northwestern.edu 1 Corresponding...

...Hyunho Shin A process of calibrating a one-dimensional sound speed (c o ) and Poisson’s ratio (ν) of a (split) Hopkinson bar is presented. This process consists of Fourier synthesis and iterative dispersion correction (time-domain phase shift) of the elastic pulse generated by the striker impact...

... a ballistic setup where target plates were cooled down to as low as −60 °C before we present results from ballistic impact tests with three different projectile types. The ballistic limit velocities from tests at low temperatures were higher than the ballistic limit velocities from tests at room temperature...

... for impacts beyond 150 m/s is not feasible as the granules lose their spherical shape due to very large loads (>300 kN) for which the overlap between granules exceeds one-quarter of the granule diameter. Equation (6) can also be used to estimate the sound speed ( c 0,predicted ) of a packing...

...S. Pant; S. Tamboli; S. N. Khaderi A common method of generating a tensile wave in Split-Hopkinson bar experiments is to impact a hollow striker on an anvil/collar attached to the incident bar. When the anvil/collar is attached to the incident bar using screw threads, the incident signals usually...

... deformation polycarbonate model computational mechanics constitutive modeling of materials dynamics flow and fracture impact mechanical properties of materials plasticity thermodynamics wave propagation Air Force Office of Scientific Research 10.13039/100000181 FA9550-15-1-0415...

...Jasper Lienhard; David Veysset; Keith A. Nelson; Christopher A. Schuh At sufficiently high velocities, a microparticle impacting a metal substrate can cause ejection of material from the substrate and impact-induced melting, both of which can result in erosion. Here, we directly image the impact...

... Hugoniot fracture nucleation stress ultimate tensile strength spallation molecular dynamics computational mechanics flow and fracture impact mechanical properties of materials dynamics wave propagation Polyurethane and polyurea are two of the most widely used polymers for engineering...

...Shiyao Lin; Anthony M. Waas The low velocity impact (LVI)-induced damage of a highly anisotropic laminate [0/90/0/90 9 ] s has been studied experimentally and numerically. The purpose of the analyses of this laminate is that this stacking sequence resembles a sandwich composite panel, in the sense...

...Amartya Bhattacharjee; Anindya Bhaduri; Ryan C. Hurley; Lori Graham-Brady A micromechanical multi-physics model for ceramics has been recalibrated and used to simulate impact experiments with boron carbide in abaqus . The dominant physical mechanisms in boron carbide have been identified...

...M. A. N. Dewapriya; R. E. Miller Recent advances in experimental techniques have enabled impact tests of ultrathin films. For example, microprojectile impact tests of ultrathin polymer films have revealed that their specific penetration energy is about ten times more than that of the conventional...

...-body chains where the impulse wave generated by impact gets blocked before it reaches a contacting end. The topic of unilateral constraints and associated complementarity relationship has been investigated by many previous investigators. The topic is diverse, and there are numerous published articles...

...N. Kumar; S. N. Khaderi; K. Tirumala Rao We investigate the normal impact of a rigid sphere on a half-space of elasto-plastic auxetic/metal foam using the finite element method. The dependence of the coefficient of restitution, peak force, maximum displacement, and contact duration on the yield...