摘要
可靠度是衡量结构物固有可靠性水平的重要指标之一,正确选取可靠性分析方法以及可靠度计算方法是开展舰艇用复合材料结构可靠性设计工作的基础和保障。舰艇用复合材料结构工作环境复杂,加之复合材料本身具有非均匀、各向异性等性质,力学性能比传统金属材料复杂得多,离散度也大,导致结构可靠性设计问题相对突出。对此,分析了舰艇用复合材料结构强度特性及其分布规律,提出基于应力-强度干涉模型进行舰用复合材料结构可靠性分析,采用B基准设计许用值的安全系数法开展可靠度计算的可靠性设计技术途径。二者联立,在求解问题能力及结果准确性等方面具有明显的可操作性和优越性,对开展舰艇用复合材料结构可靠性设计具有重要的参考意义。
Reliability is one of the important indexes to measure the inherent reliability of structures. The right selection of reliability analysis and calculation method is the basis and guarantee for the reliability assessment of composite structures in warship. Working environment of composite structures for naval ships is complicated,and the discrete characteristics of its structural mechanics performance is higher than that of the traditional metal structure and the problem of structural reliability is relatively serious because of the limitations of the designing technology and the production capability. For this reason, firstly, the paper analyzes structural strength properties and its regularities of distribution of composite structures for naval vessels. Then,we pesent the method of analyzing reliability of composite structures based on stress-intensity interference model and working out reliability by safety factor method for the design of allowable values of the reference design. In the two parts,it has obvious advantages and operability in solving problems and result accuracy,which has important reference value for the development of structural fatigue reliability assessment of naval vessels.
出处
《玻璃钢／复合材料》
CAS
CSCD
北大核心
2016年第6期33-36,10,共5页
Fiber Reinforced Plastics/Composites
基金
国家自然科学基金面上项目资助(51479205)
关键词
可靠度
舰用复合材料
结构可靠性设计
应力-强度干涉模型
B基准设计许用值的全系数法
reliability
composite structures in warship
reliability design of structure
stress-intensity interfer ence model
safety factor method of allowable value of B reference design
