To solve the problems of low net harvesting rate, high loss and uneven stubble height during harvest laver, laver (Porphyra yezoensis) was selected as research object, analysis cultivation mode, biomechanical characteristics, trajectory force were carried out. A sectional hob type device designed. rigid-flexible coupling model related to interaction between cutting mechanism constructed based o...

Short-fiber-reinforced composites (SFRC) are high-performance engineering materials for lightweight structural applications in the automotive and electronics industries. Typically, SFRC structures manufactured by injection molding, which induces heterogeneous microstructures, resulting nonlinear anisotropic behaviors challenging to predict conventional micromechanical analyses. In this work, we...

This paper reports the evaluation and benchmark results of vehicle crash simulations using high-performance computer systems, which is well suited for addressing some of the above-mentioned computational and user requirements. In this paper, two large size vehicle models are used in this benchmark study for a typical industrial standard crashworthiness application, The performance related issue...

in design of defense structures, concrete are often used to provide protection against incidental dynamic loadings such as the impact of a steel projectile. in the present study, a new analytical model is proposed to predict penetration depth into concrete targets by ogive nose projectile. hence, to ­ develop the model and simulate penetration of high velocity ogive-shape nose steel projectiles...

Wrinkling and fracture are the important defects in deep drawing operation, which can be prevented using blank holding force (BHF) which has to be optimized as lower BHF promotes wrinkles formation and higher BHF promotes fracturing. Hence the limits of wrinkling and fracture have to be established. These limits depend on various tooling and process parameters. In this work the effect of toolin...

A Reissner-Mindlin shell formulation based on a degenerated solid is implemented for NURBS-based isogeometric analysis. The performance of the approach is examined on a set of linear elastic and nonlinear elasto-plastic benchmark examples. The analyses were performed with LS-DYNA, an industrial, general-purpose finite element code, for which a user-defined shell element capability was implement...