Progressive failure analysis of a hip joint based on extended finite element method

Failure assessment of hip stem due to pelvic positioning and femoral stem loosening

“…More details can be found in the authors' previous work. 16,40 It is worth noting that several criteria can be used to predict crack initiation, that is,, maximum principal stress/ strain criterion, ultimate nominal stress/strain criterion, and quadratic separation-interaction criterion. 35 Among these criteria, the maximum principal stress criterion was adopted in the present model to predict crack initiation.…”

“…Due to the difficulties in experimental work of fatigue and fracture mechanics in general, and to save time and money, applying numerical solutions is a must. 15,16 Many studies prove that the extended finite element method (XFEM) gives a good simulation for predicting crack initiation and propagation. [17][18][19][20] Both experimental and numerical methods, especially XFEM, were implemented in the study, 18 and the results were in agreement and provided a reasonable explanation of failure.…”

“…Based on the XFEM, the static and fatigue crack growth was monitored to the failure. 16,18 Several researchers [21][22][23][24] studied the damage in the artificially cemented hip joint when the acetabular cup positioning angle = 0 . Most of them [21][22][23] investigated the damage in intramedullary fixated cemented prostheses (cement mantle part) regarding the site of crack initiation, crack number, and crack growth rate.…”

“…25 The main objective of the present work is to examine the effect of pelvic positioning and femur movement on stem failure in the hip joint under static and fatigue loadings. It is worth noting that the authors previously 16 tried to fill the gap in the literature regarding the failure behavior of the artificially cemented hip joint by studying the effect of the acetabular cup positioning angle on the contact area and pressure distribution between the ball and cup in addition to its impact on the crack initiation site and crack path in cup, cement, such joint under static load. The current research expanded to include the study of stem failure in cemented hip joints under static and cyclic loadings as a second attempt to fill this gap further.…”

Investigation The Effect of Clearance and Body Weight on The Contact Pressure of Metal on PCU Hip Prosthesis using Finite Element Method

“…This is a mechanism that is widely used by researchers to study the contact between materials [8][9][10] [11]. The extended finite element method (XFEM) was adopted by Bashiri et al [12] to predict the progressive failure of an artificially cemented hip joint. The results show that the initial location of the crack and the fracture path in the artificially cemented hip joint can be predicted using the XFEM.…”