🧪 Engineering Biomedical Engineering Simulation

This simulator narrows "biomedical engineering meets human physiology" down to one concrete, well-defined mechanism: how a total hip replacement's ball-and-socket bearing is stressed by the body's own walking gait. A physiological joint-force curve — the double-humped loading response and pre-swing peaks measured in real instrumented implants — drives a genuine Hertzian contact-mechanics model of the femoral head pressing into the acetabular liner. Switch between UHMWPE, metal-on-metal and ceramic-on-ceramic bearing couples to see the real engineering trade-off implant designers face: softer materials spread the load over a wider, lower-pressure patch but wear faster, while stiffer materials concentrate enormous pressure into a tiny patch that the material must survive elastically. Live readouts track joint force, percent body weight, peak contact pressure and contact-patch radius as the gait cycle plays out.