And the similarities and differences between the properties of regular wave impact pressure and that of the irregular wave impact pressure are discussed 比较码头面板所受的随机波浪冲击作用和规则波冲击作用的异同点。
On the one hand , the dynamic impacting action of moving vehicles to the bridge influences the working state and the using longevity of the bridge in direct 一方面，移动车辆对桥梁的动力冲击作用对桥梁的工作状态和使用寿命产生直接影响。
The same capability of the mesh deforming method in 3 - d is validated by simulating the interaction of propagating shock and two cubic objects 通过模拟两个方形物体在激波冲击作用下的运动，验证了该变形技术对三维网格也能实现较强的变形能力。
This paper presents the experimental investigation of random wave impact on piled wharves with different shore connecting structures , also the certification analysis by the numerical simulation results 本文应用物理模型试验和计算机数值模拟相结合的手段，对不同接岸型式码头面板底部受到的随机波浪冲击作用进行了研究。
We must realize that the fund is a double - edged instrument which always acts by the following principle : it will be bought in the bull market and will be sold in the bear market 只要基金认为股市处于牛市，它们是一定要买入的。而当股市发生逆转步入熊市时，基金就会坚决抛售股票，而绝不会救市，这对市场的冲击作用更大。
This not only contributes to understanding real dynamic characteristics of pcb under drop impact and perfecting theory research , but also provides a reference for reliability design and evaluation of pcb 这不仅有助于认清电路板跌落冲击作用下的真实动力学特性，完善其理论研究；还为电路板可靠性设计和可靠度评估提供理论依据。
A slipped disc occurs when the jelly - like disc of cartilage that acts as a cushion between two vertebrae in the spine , slips or prolapses so it is pressing on the nerves causing the muscles of the back to go into spasm 椎间盘脱出是由于脊柱两块椎骨中的起缓冲冲击作用的胶状椎间盘软骨发生滑动或脱垂时,压迫椎管内神经引起后背痉挛
In coast and offshore engineering , the safety of the structures whose superstructures located in the splash zone such as piled wharves , shore trestles , oil drilling platforms , etc , have great relation to wave slamming 在海岸和近海工程中，近海采油平台、桩基码头和海上栈桥等上部结构位于浪溅区的建筑物的安全与波浪冲击作用关系极大。
The response that the arm frame is affected by different brunt load is observed through changing the peak of brunt load . so lowing the dynamic load ' s peak is a mean to solve the problem that vibration is too big 通过改变油缸冲击作用的峰值，观察臂架机构在不同油缸冲击载荷作用下的响应，可知减小泵车油缸冲击峰值也是减小臂架振动的有效途径之一。
The finite element code ls _ dyna is used to investigate the response of the axisymmetry cylindrical shell under the thermal impact , and the curves of displacement vs time and that of stress vs time are obtained 最后利用有限元程序ls - dyna对轴对称圆柱壳受高速热冲击作用进行了计算机仿真分析，得到了位移时间曲线和单元的应力时间曲线，同文献已有的结果吻合的较好。
