防护结构拟动力试验方法及其数值积分方法研究

PSEUDO-DYNAMIC TESTING OF PROTECTIVE STRUCTURES AND STUDY OF NUMERICAL INTEGRATION METHOD

近来发展起来的拟动力试验方法用于防护结构的抗爆试验是一项正在研究的技术￣［１］，针对于此项研究中数值积分方法部分进行了研究。分析了可用于防护结构拟动力试验的各种积分方法，讨论了已有方的数值特征及可行性。并提出一种修正的中心差分方法用来对因试验摩擦引起的能量损失进行补偿，同时研究了该方法的数值特性。

Pseudo-dvnamic test is still a new and under studying technique in blast-resistanttests of Protective structures. In this paper the integration methods which can be adopted in thepseudo-dynamic test are analysed,their numerical characteristics and applicability for shock load-ing are discussed.A new modified central difference method which can be used to compensate theloss of energy caused by test apparatus is suggested.