Conventional crimp joints show high sensitivity to process conditions which makes it difficult to ensure joint quality. Low sensitivity of a joint to process conditions increases the structural integrity and performance of the product, yielding a more reliable structure. In this work, we address this problem and propose a new type of crimp joint. First the sensitivity of the joint to the crimping process parameters is investigated numerically, i.e. the crimping tool stroke, friction conditions, and the range of tolerances. The results provide a mechanical interpretation for the scatter of burst pressure at conventional crimp joints and that the sensitivity of the proposed joint to process parameters is practically negligible. The numerical model of the proposed joint is validated experimentally and good agreement between the numerical and experimental measurements is observed.

Graphical abstract

中文翻译：

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对工艺参数不敏感的压接：数值和实验研究

传统的压接接头对工艺条件表现出高度敏感性，这使得难以确保接头质量。接头对工艺条件的低敏感性提高了产品的结构完整性和性能，从而产生更可靠的结构。在这项工作中，我们解决了这个问题并提出了一种新型的压接接头。首先以数值方式研究接头对压接工艺参数的敏感性，即压接工具行程、摩擦条件和公差范围。结果为传统压接接头处爆破压力的分散提供了机械解释，并且所提出的接头对工艺参数的敏感性实际上可以忽略不计。

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