Abstract In this analysis, we consider the effects of non-quiescent initial conditions driven by pre-impact air–water interactions on classical Wagner model impact theory. We problem a rigid, solid impactor moving vertically towards liquid pool. Prior to impact, viscous forces in air act deform free surface, inducing flow These are then incorporated as post-impact analysis. derive expressions f...

Coccydynia is a term that refers to pain in the region of the coccyx. Most cases are associated with abnormal mobility of the coccyx which may trigger a chronic inflammatory process leading to degeneration of this structure. In some patients this instability may be detected on dynamic radiographs. Nonsurgical management remains the gold standard treatment for coccydynia, consisting of decreased...

Subcalcaneal fat serves as shock absorber and provides cushioning to the underlying foot structures and the body as a whole. Changes in mechanical response of the subcalcaneal fat (i.e., stiffening due to age [1] or diabetes [2]) can compromise the ability to dissipate plantar stress and potentially cause tissue injury. Inverse finite element (FE) analysis has been used to quantify mechanical p...

Hip arthroscopy is commonly used both to diagnose and treat different underlying hip conditions. It may be performed either by a supine or lateral approach. A peroneal post is commonly used with a fracture table in both the supine and lateral positions to provide lateralization and traction of the femur. Adequate distraction of the hip joint may be difficult without the peroneal post. We achiev...

In this paper, combined with the actual situation encountered in process of product transportation, finite element analysis software ANSYS/LS-DYNA was used to simulate dynamic drop buffer packaging structure T01067* series fuel pump, and simulation results were analyzed, a conclusion drawn. According pump weight calculation material thickness, according size design pulp molded cushion structure...