超高压爆破片设计爆破压力的半经验计算公式

Semi-empirical calculation formula of bursting pressure for design of ultra-high pressure bursting disc

针对超高压正拱型爆破片提出设计爆破压力的半经验计算公式,开展超高压爆破片预拱变形后非均匀减薄壁厚的测量试验,借助试验数据对爆破片变形后非均匀减薄壁厚的理论计算公式进行修正,同时,为进一步简化半经验公式及过程,选取不同材料、爆破压力和挠曲高度的试验数据,建立爆破片挠曲高度和材料应变硬化指数之间的关联关系,对设计爆破压力半经验公式化繁为简,利用试验方法,对爆破片的爆破压力进行试验验证,试验结果与理论计算结果吻合较好,其误差分别为3.72%和6.59%,对实际工程应用具有指导意义。

A semi-empirical calculation formula for the design of bursting pressure was proposed for the ultra-high pressure domed type bursting disc,and a measurement test on the non-uniform thinning wall thickness of the ultra-high pressure bursting disc after pre-arch deformation was carried out.The theoretical calculation formula for the non-uniform thinning wall thickness of the bursting disc after deformation was modified with the help of the test data.By selecting the test data of different materials,bursting pressure and deflection height,the correlation between the bending height of the bursting disc and the strain hardening index of the material was established,and the semi-empirical formula of the design bursting pressure was simplified.The test method was used to verify the bursting pressure of the bursting disc.The test results are in good agreement with the theoretical calculation results.The errors are 3.72%and 6.59%respectively,which should have great guiding significance for practical engineering.