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impact to be v = √(2 · a · d) = √(2 · 9.80665 · 15.5) = √304 = 17.44 m/s (a nice 1.8 s fall). We subsitute in the second formula above and get Favg= 250 · 17.44 / 0.2 = 21.8 kN and Fmax= 43.6 kN of impact force acting on the object.check the calculation ...
A theoretical method based on Hertz contact theory is presented for calculation of impact force of outrunner block in debris flow. Special attentions are given to the elastoplastic deformation of structures. Hertz contact theory is modified using perfectly elastoplastic Thornton hypothesis to consider the...
Impact energy – Impact force calculation Consider an impactor with mass, m [kg]m [kg] traveling at a velocity of v [m/s]v [m/s], and collides with a stationary object. The kinetic energy of the impactor is the impact energy, EE, i.e., E=12mv2E=21mv2 The impact force, howeve...
2) Simulation calculation of impact force 冲击力模拟计算3) shock calculation 冲击计算 1. According to[1], the longitudinal shock calculation of the helix spring in the shockproof device is discussed. 讨论了[1]中提出的汽车防撞防振器中螺旋弹簧的纵向冲击计算,同时也简单地介绍了板簧及组合圆柱形...
Then the meshing impact force of the chain drive system at a speed of 150r / min is calculated. The finite element analysis software ANASYS Workbench was used to perform modal analysis on four different specifications of graphite plates, and then the natural frequencies and mode shapes were ...
W AY SCI EN CE国铁道科学V01.31N o.6N ovem ber,2010文章编号:1001—4632( 2010) 06—0056—07落石冲击力计算方法叶四桥,陈洪凯,唐红梅( 蕈庆交通大学岩土工程研究所,醇庆400074)摘要:针对现有落石冲击力算法计算所得结果严重偏小的『nJ 题,提出应考虑落石冲击过程中落石重量和反弹效应对落石冲击力的影响,并...
initial impact velocity and stiffness of ship and pier,on contact time were analyzed.The simplified calculation formula of contact time was obtained by data fitting,and verified by numerical simulation through practical vessel-bridge collision engineering.The definition of contact time of floating debris...
A falling car is another example because the front crumples from the impact. Assuming that it crumples in 50 centimeters, which is 0.5 meters, the mass of the car is 2,000 kg, and it is dropped from a height of 10 meters, the following example shows how to complete the calculation. ...
Through the theory of dimensional analysis method it derived the influence factors of rockfall impact force. It has the quality of the impact object,impact velocity,elastic modulus and angle between the impact object and the object to be impacted,and it has been the relationship between the variou...