摘要
分析了高压缸的应力分布特点,推导了确定缸筒内压的公式,通过对该公式的分析,得出缸筒径比大于5时高压缸所能承受的最大工作内压趋于定值的结论。由第四强度理论推导出了高压缸危险位置处(缸筒内壁)的当量应力的计算公式,并进一步建立了缸筒内压与缸筒径比及持久极限的量化关系。根据这些关系提出了在设计厚壁高压缸(主要指超高压缸)时,为了提高工作内压而应采取适当结构形式的建议,这些建议对于如何有效设计使用缸筒具有一定的指导意义。
The characteristics of stress distribution in high-pressure vessel are analyzed, and the formula of inner pressure is derived. The maximal inner pressure that the high-pressure vessel can support does not increase when the diameter ratio is more than 5. A formula of equivalent stress at the dangerous position (inside wall) in high-pressure vessel is educed according to the fourth strength theorem. The relationships among inside pressure and diametrical ratio, and the fatigue limit are proposed. The advice t...
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2006年第S1期363-364,共2页
China Mechanical Engineering
关键词
高压缸
射流切割
应力
强度
high-pressure cylinder
jet cutting
stress
strength
