failure stress condition 破坏应力条件
The results show that the stress corrosion is the main failure causing of the bellows expansion joint, while the local pit corrosion, residual stress and the working stress is the necessary condition.
结果表明，应力腐蚀是该膨胀节失效的主要原因，而局部的点蚀和残余应力、工作应力是应力腐蚀的必要条件。
According to the simulation result, in the condition of vertical stress greater than horizontal stress, the failure occurs in lateral wall of the tunnel.
根据模拟结果，在垂直应力大于水平应力的情况下，破坏主要在巷道侧面上发生。
By raising stress level in the condition of unchanging failure mechanism of combustion welding rod, failure data was acquired in very short time.
在不改变燃烧焊条失效机理的前提下，通过提高应力水平，在很短时间内得到焊条的失效数据。
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