Point load effect on the buried polyolefin pipes lifetime

Polymer pipe lifetime is conventionally estimated by internal pressure test. However, important for service are also other types of loading as: additional bending, different type of external loading from sand embedding, or effect of the residual stresses. One of the dangerous type of loading is so‐called “point load” caused, for example, by stones in the soil. The present article is focused on the numerical prediction of this effect on the pipe...