爆炸分离冲击环境地面模拟试验中一般通过悬挂试验实现。试验中连接两分离部件爆炸螺栓预紧力可能会对分离冲击响应产生影响。爆炸螺栓预紧力由螺栓安装拧紧力矩与分离下件重量产生，通过分析该力矩及该重量变化研究预紧力对响应影响。通过数值模拟、试验研究，分别在时、频域对响应影响进行分析。结果表明，爆炸螺栓安装力矩及分离下件重量在一定范围内的变化对中远场冲击响应影响较小。
Abstract
The pyroshock simulation test on the ground is achieved through a hanging test. Two separation parts are connected by explosive bolts. The pretightening force of explosive bolts may have influence on impulse response during a pyroshock event.Considering the pretightening force is determined by the tightening torque and the weight of the lower separation part,the importance of these two factors is investigated in this research by applying a FE numerical simulation and a hanging test. Different tightening torque and separation part weight are considered. The experiment results are analyzed both in time and frequency domain. Both the simulation and experiment results indicate that the influence of thoses two factors is limited at mid-field and far-field from the explosive bolts.
关键词
爆炸螺栓 /
预紧力 /
爆炸分离冲击 /
冲击响应
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Key words
explosive bolt /
pretightening force /
pyroshock /
impulse response
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