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气相色谱仪GC柱箱结构的抗爆设计对提高仪器的使用安全性非常重要。文中采用数值仿真方法,对Agilent公司某型号气相色谱仪的柱箱门在爆炸载荷下的动力响应进行了研究。通过ANSYS软件建立柱箱结构的三维模型,利用LS-DYNA3D软件进行求解,利用任意拉格朗日欧拉ALE(Arbitrary Lagrange-Euler)算法、炸药爆轰产物的JWL状态方程、流体介质的材料模型和状态方程等对柱箱门结构在爆炸载荷作用下的模型进行了研究。结果表明:该仿真模型有效地估计了爆炸载荷下柱箱门的抗爆性能,为结构设计和优化提供了技术支持。
The GC explosion-proof design of the GC oven structure is very important to improve the safety of the instrument. In this paper, the numerical simulation method is used to study the dynamic response of oven door of a certain Agilent gas chromatograph under blast load. The three-dimensional model of the oven structure was established by ANSYS software and solved by LS-DYNA3D software. Using arbitrary Lagrange Eulerian ALE (Arbitrary Lagrange-Euler) algorithm, the JWL equation of state of explosive detonation products, the material model of fluid medium And equation of state on the oven door structure under the explosive load of the model was studied. The results show that the simulation model can effectively estimate the antiknock performance of oven doors under explosive load and provide technical support for structural design and optimization.