确定缓冲曲线的应力-能量法研究

应力-能量法是确定缓冲材料缓冲曲线的主要方法,其能预测任意高度的缓冲曲线,操作简便,且基于试验所得数据进行推算,可以得到较为精确完整的缓冲曲线,但由于应力-能量法是以假定缓冲材料在受到冲击过程中没有能量损失为前提,且该法较易受人为因素的影响,故利用应力-能量法的动能量公式计算得到的能量不够精确.现有对应力-能量法的应用研究可分为直接应用和改进应用两个方面,今后的研究可适当减少能量水平和跌落次数,进一步优化数据拟合函数的选取以及试验数据,从而更大程度地节省材料及试验时间,以获得更准确的缓冲曲线.

Research on Stress-Energy Method for Determining Cushioning Curve

Stress-energy method is the major method of determining cushioning curves of cushioning materials. Cushioning curves at any height could be predicted by this method with easy operation. As the calculation is based on the data from experiments, fairly accurate and complete cushioning curve could be gotten. But the assumption of stress-energy method is there is no energy lost during the impacting process of buffer materials, and this method is more easily influenced by artificial factors, therefore the energy calculated by using dynamic energy formula of stress-energy method is not precise enough. The existing application research on stress-energy method could be divided into two aspects, direct application and the improved application. In future study, the energy level and falling times could be properly reduced with the optimization of data fitting function selection and experimental data in order to save materials and experiment time to get more accurate cushioning curves.