LPG 短钢瓶爆破强度拟合公式的可靠性分析

摘要

Bursting strength was the important index on the steel cylinder design of LPG.According to bursting test data of the short steel cylinder, taking the experimental formula as a basis, the fitting formula for calculating of bursting strength was derived and obtained;using random fuzzy probability model, the reliability of fitting formula was analyzed .Research indicates that under the severest pressure test condition , minimal reliability scope for its bursting strength is 0.999 999 698~0.999 999 997 54 for YSP35.5, YSP23.5 type of steel cylinder designed by fitting formula, the effectiveness of fit-ting formula is proved.%爆破强度是LPG钢瓶设计的重要指标。根据短钢瓶爆破试验数据，以经验公式为基础，推导得到了爆破强度计算的拟合公式；应用随机－模糊概率模型，对拟合公式的可靠性进行了分析。研究表明，在最苛刻压力试验条件下，用拟合公式设计的YSP35．5、YSP23．5型号钢瓶，其爆破强度最小可靠度范围为0．999999698～0．99999999754，验证了拟合公式的有效性。