CAJ | 학술논문

基于容器静强度和载荷的不确定性,应用模糊可靠性理论,建立了确定球形容器静强度在不同工况模糊许用可靠度范围的原则,探讨了安全系数与模糊许用可靠度之间的关系。研究表明：①在液压试验、气压试验和正常操作工况时,屈服强度的模糊许用可靠度范围分别为0.98~0.99、0.996~0.999和0.999~0.9999,爆破强度的模糊许用可靠度范围分别为0.9999~0.99999、0.999995~0.99999995和0.9999995~0.99999995；②基于满足模糊许用可靠度范围,钢制薄壁内压球形容器屈服安全系数应不小于1.45,抗拉安全系数应不小于1.85。
기우용기정강도화재하적불학정성,응용모호가고성이론,건립료학정구형용기정강도재불동공황모호허용가고도범위적원칙,탐토료안전계수여모호허용가고도지간적관계。연구표명：①재액압시험、기압시험화정상조작공황시,굴복강도적모호허용가고도범위분별위0.98~0.99、0.996~0.999화0.999~0.9999,폭파강도적모호허용가고도범위분별위0.9999~0.99999、0.999995~0.99999995화0.9999995~0.99999995；②기우만족모호허용가고도범위,강제박벽내압구형용기굴복안전계수응불소우1.45,항랍안전계수응불소우1.85。
In allusion to Indetermination of static strength and load for vessel, applying fuzzy reliability theory, author has established the principle of fuzzy allowable reliability scope, that determined the static strength of spherical vessel under different operation conditions, has discussed the relation between safety coefficient and fuzzy allowable reliability. Research indicates that:①The fuzzy allowable reliability scope of yield strength is separately 0. 98~0. 99, 0. 996~0. 999 and 0. 999~0. 999 9 for hydraulic test, gas pressure test and normal operation condition, the fuzzy allowable reliability scope of bursting strength is separately 0. 999 9 ~0. 999 99, 0. 999 995 ~0. 999 999 95 and 0. 999 999 5 ~0. 999 999 95.②The safety coefficient of yield strength shall be not less than 1. 45, and the safety coefficient oftensile strength shall be not less than 1. 85 for thinwall steel made spherical vessel with internal pressure based on meeting fuzzy allowable reliability scope.