This paper summarize the permissible stress range method for fatigue strength analysis which was adopted in guidance of China Classification Society ( CCS). 文章总结了中国船级社疲劳强度评估方法中的许用应力范围方法。
The permissible stress range formula and transfer factor of fatigue stress range were deduced. 推导了疲劳许用应力范围计算公式和不同概率水平下疲劳应力的转换关系。
Analysis on Cable Permissible Stress of Extradosed Cable-stayed Bridge Based on Fatigue Reliability 基于疲劳可靠度矮塔斜拉桥拉索容许应力分析
This paper presents the key points to the design of these two types of masts and provides the permissible stress and deflection range that should be satisfied in design calculation of a specific application. 文中论述其设计要点,为适应工作条件,在设计计算中应满足相应的许用应力和挠度允许范围等。
But in launching calculation, the hull is assumed a rigid body and is simplified into a simple girder with elastic support. After checking with permissible bending stress from class rules, a satisfaction result has been reached. 然而,在下水计算中将船体假定为刚性体,简化为弹性支点的简支梁,采用船规法定的弯曲许用应力来校核,可得出满意的结果,从而简化了计算手续。
The results are that the maximum displacement and maximum stress occurs at initial time and the maximum stress is less than permissible stress. 结果表明,结构最大应力和最大位移均发生在初始时刻,最大应力小于许用应力。
In the approach of determining the lower bound, the conditions of equilibrium, stress boundary, yielding and stress discontinuity are considered, and the overload factor and strength safety coefficient of the gravity dam as well as the corresponding statistical permissible stress field also can be obtained. 在下限法中,考虑平衡条件、应力边界条件、屈服条件以及应力间断条件,求得了超载系数和强度储备系数的下限值及相应的静力容许应力场。
This article analyses various factors and concludes the following breaking reasons: 1. not enough consideration of the whole system so that the less load had been evaluated, 2. higher permissible stress had been sellected; 粘胶纤维成形时丝条断头原因浅析本文分析了各方面的因素,归纳出断裂原因:①对整个体系认识不够,导致对载荷估计偏低,②对许用应力选用偏高;
The temperature distribution in saw blades kinetosome is even. Based on the third intensity theory, the thermal stress does not exceed the range of safety permissible stress of material. 基体温度分布均匀,根据第三强度理论,热应力没有超出材料的安全许用应力范围;
Permissible stress range criterion for fatigue strength of ship hull structures 船体结构疲劳强度校核的许用应力范围衡准
The paper analyzed the difference and the relation in the calculation of two limited states and compare with permissible stress method. 本文在全面介绍加筋混凝土结构设计计算中两种极限状态主要内容的基础上,对两种极限状态计算中的区别和联系加以分析,并与容许应力法做以比较。
The establishing basis and calculation method of static load curve for the turntable bearings have been discussed, the condition determined permissible static load contact stress is defined, and the establishing method and step of static load curve are introduced. 论述转盘轴承静载荷承载曲线创建的依据和计算方法,定义了静载荷接触应力许用水平的条件,陈述承载曲线的创建方法与步骤。
It is realized that there exist an optimal number of girders and that of floors for the minimum grillage weight, and a small amount raising of the permissible stress may bring in an apparent weight saving. 计算表明,对板架的最小重量存在着最佳的纵桁数目和最佳的肋板数目,而设计应力稍加提高,有可能节省较多的重量。
According to the fact of offshore surface casing cementing operations, a dynamic response has been designed for on site operation conditions and the design parameters that should be adopted for permissible safe stress and safe allowance have been obtained. 结合海上表层固井作业的实际情况,进行了现场作业条件下的动力响应设计,得到了在安全许用应力及安全余量条件下应该采用的设计参数。
Increase permissible stress of the cold extrusion concave and prevent break 冷挤压凹模强度的提高与开裂失效的预防