During the processes , the container - truck strikes the guardrail twice and nearly capsizes , then recovers from the capsizal and separates from the guardrail ; the crashworthiness of several kinds of guardrails is evaluated by changing its size and thickness , and its design is guided under the simulation result ; the joint simulation is discussed and calculation method of its resistance moment is proposed 对车辆的碰撞过程进行了描述：车辆在碰撞过程中发生了二次碰撞并且有倾覆现象，最后车辆恢复正位，顺利沿护栏导出；通过改变护栏栏杆的尺寸和壁厚，评估了多种护栏的耐撞性并指导了护栏的设计；讨论了集装箱汽车列车鞍座结构的处理，提出了鞍座阻力矩的计算方法。
2.
The research on the ship maneuverability in the wind , wave and current , can not only be used to optimize the maneuverability design in the ship design stage , help to understand the mechanics of ship collision and capsizal , but also guide the handling operator to improve the handling skill , guard against the sea accident . therefore , the study is significant both theoretically and practically 研究船舶在风、浪和流中的操纵性，不但能够在设计初始阶段，对船舶的操纵性能进行优化设计，而且有助于了解船舶碰撞与倾覆事故的产生机理，指导驾驶人员提高驾驶技术，预防海难发生，因而既有理论上的意义，又有很大的实用价值。
