Structural simulations of electric motors require precise material models. Laminate stacks that are made several identical steel sheets particularly challenging to simulate using FEA. The structural stiffness laminate usually follows transversal isotropic behavior. Measuring a complete stack used in passenger cars is due its size and the high testing load needed reach real loads experienced whi...

Preload optimization is very important for ultrasonic motors’ design and application. In this paper, a novel method traveling-wave rotary motor proposed. Firstly, based on linear regression the analytic hierarchy process (AHP), mapping between drive characteristics, mechanical speed stability, preload of traveling-wave-type was established. Then, characteristic curves stalling torque, no-load s...

OBJECTIVES The aim of this study was to compare the following approaches to assess left ventricular preload by transesophageal echocardiography (TEE): left ventricular end-diastolic volume index (LVEDVI) determined by using the method of disc summation (LVEDVI(Md)) and left ventricular end-diastolic area index (LVEDAI) were compared with LVEDVI assessed by the modified Simpson formula (LVEDVI(S...

BACKGROUND Hemodynamic load regulates myocardial function and gene expression. We tested the hypothesis that afterload and preload, despite similar average load, result in different phenotypes. METHODS AND RESULTS Afterload and preload were compared in mice with transverse aortic constriction (TAC) and aortocaval shunt (shunt). Compared with sham mice, 6 hours after surgery, systolic wall str...

BACKGROUND Assessment of systemic right ventricular (RV) function in patients with hypoplastic left heart syndrome is important during long-term follow-up after Fontan repair. Traditional echocardiographic parameters to evaluate systolic ventricular function are affected by loading conditions. The only generally accepted load-independent parameter of systolic function, end systolic elastance (E...