The identification of the critical infrastructure has shown that the build civil engineering infrastructure is almost involved everywhere, even with the IT-infrastructure. Therefore, the passive safety of structures i...The identification of the critical infrastructure has shown that the build civil engineering infrastructure is almost involved everywhere, even with the IT-infrastructure. Therefore, the passive safety of structures is demanded. Security associations have analysed that most assaults came along with explosion and impact scenarios, which amount in 80% of assaults. Consequently, these are the extraordinary loads the structures have to be planned and designed for. To carry out such an engineering job, the engineer has to be educated in multiple disciplines as physics, material science , continuum mechanics, numerical mechanics, testing, structural engineering and related specific fields as wave propagation etc. In this paper we will concentrate on the subjects of numerical simulation and testing.展开更多
为了探寻碰撞参数变化对大豆种子应力分布及形变位移的影响规律,利用Solid Works Simulation对大豆种子碰撞过程进行了模拟分析,获得了大豆种子碰撞过程的应力分布与位移形变及其随时间的变化,并以碰撞速度及接触半径为试验因素,大豆种...为了探寻碰撞参数变化对大豆种子应力分布及形变位移的影响规律,利用Solid Works Simulation对大豆种子碰撞过程进行了模拟分析,获得了大豆种子碰撞过程的应力分布与位移形变及其随时间的变化,并以碰撞速度及接触半径为试验因素,大豆种子碰撞过程的最大应力及最大位移为试验指标,采用正交试验方法,分析参数变化对指标的影响。试验结果表明:对最大应力指标,两因素影响极显著;对最大位移,因素接触半径影响极显著,碰撞速度影响显著。且两指标随着碰撞速度的增大而减小,随着接触半径的增大而先减小而后趋势减缓。研究结果为大豆种子脱粒机的仿真设计和产品研发提供了参考依据。展开更多
文摘The identification of the critical infrastructure has shown that the build civil engineering infrastructure is almost involved everywhere, even with the IT-infrastructure. Therefore, the passive safety of structures is demanded. Security associations have analysed that most assaults came along with explosion and impact scenarios, which amount in 80% of assaults. Consequently, these are the extraordinary loads the structures have to be planned and designed for. To carry out such an engineering job, the engineer has to be educated in multiple disciplines as physics, material science , continuum mechanics, numerical mechanics, testing, structural engineering and related specific fields as wave propagation etc. In this paper we will concentrate on the subjects of numerical simulation and testing.
文摘为了探寻碰撞参数变化对大豆种子应力分布及形变位移的影响规律,利用Solid Works Simulation对大豆种子碰撞过程进行了模拟分析,获得了大豆种子碰撞过程的应力分布与位移形变及其随时间的变化,并以碰撞速度及接触半径为试验因素,大豆种子碰撞过程的最大应力及最大位移为试验指标,采用正交试验方法,分析参数变化对指标的影响。试验结果表明:对最大应力指标,两因素影响极显著;对最大位移,因素接触半径影响极显著,碰撞速度影响显著。且两指标随着碰撞速度的增大而减小,随着接触半径的增大而先减小而后趋势减缓。研究结果为大豆种子脱粒机的仿真设计和产品研发提供了参考依据。
