论文部分内容阅读
传统压力容器设计方法中，总是把各种参数，如材料的强度、零部件的尺寸、所受的载荷等看成是确定量，忽略了由于各种条件的变化而使这些参数发生变化的随机因素。由于对这些参数的统计规律缺乏了解，取值往往偏于保守，使所设计的压力容器及零部件的结构尺寸偏大，造成不必要的浪费。可以将可靠性的设计运用到压力容器中。可靠性设计是假设各个参量都是随机变量，按照实验的数据和工作环境确定出概率特征，再根据压力容器的重要性规定可靠度设计的方法。随着科学技术的快速发展，压力容器的强度和载载荷测试的水平也在不断提高，大量的实验结果表明：人们对各个参数随机性的认识在不断增强，所以压力容器的可靠性设计方法是未来不断发展的趋势。,In conventional design method of pressure vessel, most parameters, such as strength of material, sizes of parts, loads are all con-sidered as determined amounts, ignored random factor of parameters random changes caused by various changes of conditions. Due to the lack of understanding of the statistical law of these parameters, values tended to be too conservative .In Conventional design method of the pressure vessel and the components, the structure size is too large, resulting in unnecessary waste in material. Reliability design can be ap-plied to the design of pressure vessel. Reliability design is the assumption that the parameters are random variables, according to the experi-mental data and the work environment we can determine the probability characteristics, then according to the importance of pressure ves-sels regulations to determine reliability design method. With the rapid development of science and technology, the strength of pressure ves-sel and the cutting load testing level is also rising, extensive experimental results demonstrate that: awareness on each parameter stochastic enhanced, so the reliability design method of pressure vessel is the future development trend.