Abstract This work analyses the deformation of high-loaded structures for problems of strength and safety. Determining the load safety factor typically requires a series of calculations with successively increasing loads, up to fracture. In cyclic loading, each calculation is a numerical modeling of the structure behavior during several (or several tens) cycles up to stabilization to estimate the damage accumulated during one stable cycle. In multi-parameter loading, different load combinations may cause different mechanisms of structural deformation (i.e., different distributions of plastic strains and their velocities in the structure) with different consequences for the structure, thereby requiring different safety factors. At one-parameter loading, the assumption that the deformation mechanism remains the same for different load levels could reduce the required number of calculations. This article presents examples proving that this assumption could lead to incorrect results and requires careful verification.

中文翻译：

---

载荷参数单调变化时变形机制的变化

摘要 本文分析了高载结构变形的强度和安全问题。确定载荷安全系数通常需要一系列计算，载荷依次增加，直至断裂。在循环加载中，每次计算都是在直到稳定的几个（或几十个）循环期间结构行为的数值建模，以估计在一个稳定循环期间累积的损坏。在多参数加载中，不同的载荷组合可能导致不同的结构变形机制（即塑性应变在结构中的不同分布及其速度）对结构产生不同的后果，从而需要不同的安全系数。在单参数加载时，变形机制在不同载荷水平下保持相同的假设可以减少所需的计算次数。本文提供的示例证明此假设可能导致不正确的结果并需要仔细验证。