BACKGROUND The natural history of posterior cruciate ligament (PCL) deficiency includes the development of arthrosis in the patellofemoral joint (PFJ). The purpose of this biomechanical study was to evaluate the hypothesis that dynamic bracing reduces PFJ pressures in PCL- and combined PCL/posterolateral corner (PLC)-deficient knees. STUDY DESIGN Controlled Laboratory Study. METHODS Eight f...

In this paper the authors analysed four single-layered braced barrel vaults with different types of bracing. Each vault covered area 20 m × 28 and was made from steel hollow sections. The static-strength analyses structures were conducted using Autodesk Robot Structural Analysis program, taking into account self-weight, glass cover, snow load wind load. case load, pressure perpendicular to long...

To explore the difference in impact of transverse bracing on seismic effect through concrete-filled steel tube arch bridges with non-isolated and earthquake-isolated, nine earthquake-isolated structural models under different cross-bracing arrangements were established, Elcentro waves selected. The internal force, displacement, velocity, absolute acceleration, relative separation ribs each mode...

In this article, a Python-programmed advanced design paradigm is firstly introduced to topology and size optimization of the X-bracing system nonlinear inelastic space steel frames. For that purpose, an analysis method considering both geometric material nonlinearities utilized as effective finite element (FEA) solver. which, members are modeled by truss elements, while beam column simulated be...

Design tasks in structural engineering have always involved the use of constraints to formulate design requirements. Most existing algorithms for constraint satisfaction require input consisting of binary constraints on variables that have discrete values. Such restrictions limit their use in structural engineering since typical structural design tasks involve discrete and numerical variables. ...

A simplified fragility analysis of steel building frame is presented which can be used for preliminary estimate of its probability of failure. The risk analysis procedure uses the format of probabilistic Risk Analysis (PRA) and considers band limited white noise at the bed rock as the seismic input. The steel building frame is modeled as a 2D frame and Pushover analysis is then carried out to o...

OBJECTIVE Biomechanical effects of laterally wedged insoles are assessed by reduction in the knee adduction moment. However, the degree of reduction may vary depending on the reference frame with which it is calculated. The purpose of this study was to clarify the effect of reference frame on the reduction in the knee adduction moment by laterally wedged insoles. METHODS Twenty-nine healthy p...