percussion type air drill

Numerical study on the impact absorption behavior of compound tubes;

复合管撞击吸能特性的数值研究

Failure behavior of laminated composite cylindrical shells under axial impact loading;

层合圆柱壳轴向撞击失效行为的试验研究

Experiment Study on the Impacting Hurt Between RBC and Solid Surface;

红细胞-固面撞击损伤的实验研究

The elastic-plastic dynamic response of elastic foundation in collision;

弹性地基梁受撞击的弹塑性动力响应

A spring between the ship and the structure is taken into account,and the moment separation between the moving ship and the structure during the collision can be predicted.

通过引入合理的撞击模型,建立了水面运动船只低速撞击埋置框架结构的传递矩阵-节点耦合矩阵动力分析模型。

The overall thought of application of the passive safety protection technology in the design and research of the crashworthiness of urban railcar sets is discussed.

探讨了运用被动安全防护技术实施城市轨道动车组耐撞击性能系统设计的总体思想,并以某城市轨道车辆部分低地板动车组为研究对象,采用非线性动态有限元技术,进行了耐撞击系统设计和结构撞击仿真分析。

According to the structural specialties of passenger car designed for Iran,the design of the energy-absorbing structure was done in this paper,and the technical problems existing in structuctural design were solved,finally a numerical simulation of crashing was also done using the ANSYS/LS-DYNA3D.

针对出口伊朗客车的结构特点 ,进行吸能结构设计 ,解决了吸能结构设计中存在的技术问题 ,并利用ANSYS/LS -DYNA3D软件进行撞击数值模拟计

Feng s novels reveal modern people s confused and impetuous mentality in the crash and mingling of traditional culture and modern civilization.

小说揭示出现代人在传统文化和现代文明撞击、交融中的困惑、浮躁的心态。