This paper considers an idealised solar sail consisting of a uniform, elastic, isotropic square membrane that is prestressed by two pairs of equal and opposite forces applied at the corners. Two wrinkling regimes are identified. The first regime occurs for symmetric and moderately asymmetric loading; it is characterised by small, radial corner wrinkles. The second regime occurs for strongly asy...

Knee varus position and motion have been correlated with increased medial knee loading during gait. The purpose of this study is to determine whether runners with excessive varus excursion (EVE) at the knee demonstrate frontal plane knee and hip kinetics that are different from those of runners with normal varus excursion (NVE). Twelve runners with EVE were compared with 12 NVE subjects using t...

Study Design Controlled laboratory study, cross-sectional. Background Well-documented deficits in sagittal plane knee loading during dynamic tasks indicate that individuals limit the magnitude of knee loading following anterior cruciate ligament reconstruction (ACLR). It is unknown how these individuals modulate the speed of knee flexion during loading, which is particularly important as they p...

A known complication for mechanically loaded bone implants is the instability due to screw loosening, resulting in infection and non-union of fractures. To investigate eventually prevent such degradation, it useful know stress state around screw. Considering only in-plane loadings simplifying mandibular into an orthotropic laminated plate, analysis was reduced a two-dimensional pin-loaded plate...