In view of un-equality load which not regulate definitely, but it existents for a certainty in actual condition. This paper establish four mechanical model, take deformation as judge criteria of pipe failure.
针对API标准没有明确规定的、但在实际工况中又确实存在的非均匀载荷作用，本文建立了四种力学模型，以变形作为判断管体失效的依据，深入研究了非均匀载荷作用下预制孔套管的抗挤强度，着重分析了不同模型和同一模型不均匀系数变化对管体抗挤强度的影响。
参考来源 - 预制孔套管抗挤强度计算研究及应用·2,447,543篇论文数据，部分数据来源于NoteExpress
实际上，大多数油井套管的损坏是由非均匀载荷引起的。
In fact, most of casings are collapsed by non-uniform loading.
计算结果表明，在非均匀载荷情况下，套管强度破坏的危险性会增加。
The computation result shows that the risk of casing destruction will increase under the condition of non-uniform load.
采用薄板弯曲理论研究了均匀载荷作用下多晶金刚石方膜在小挠度和大挠度下的应变分布情况。
The strain distribution based on small and large deflection theories of diamond square diaphragm was studied using theories of plate bend.
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