In previous investigations of the control of grasp stability, humans manipulated test objects with flat grasp surfaces. The surfaces of most objects that we handle in everyday activities, however, are curved. In the present study, we examined the influence of surface curvature on the fingertip forces used when humans lifted and held objects of various weights. Subjects grasped the test object b...

A nonlinear model consisting “yaw, roll, longitudinal, lateral and pitch” has been developed in which, tire and suspension characteristics have been considered. Tire model is based on the elliptic concept and tire Calspan data. According to this tire model, cornering force and aligning moment are computed as a function of slip and camber (inclination) angles, normal load, tire adhesion characte...

An experimental method that can quantify relative slip was developed using digital image correlation (DIC) in order to evaluate the sliding portion. The bridge-type test setup designed establish fretting contact condition. displacements between surfaces were determined by DIC methods. Based on evolution and distribution of slip, transitions from gross partial surface found throughout all tests....

The plane elastic problem of a circular disk shrink fitted into hole in an elastically similar plane, with frictional interface, is studied subject to the application radial force and torque both which vary time. This done by use edge dislocation distributions represent slip. evolution extent position slip zone as well magnitude displacements studied. Conditions for continuous slip, leading his...

Earthquake performance of wood-frame shear walls was evaluated by comparing fully and partially anchored walls under monotonic, cyclic, and earthquake loads and comparing with code measures. Suitability of monotonic and cyclic testing to predict seismic performance was examined. Earthquake tests were conducted on 2440-mm-square walls with Douglas-fir studs. Two oriented strandboard panels were ...

Total internal reflection fluorescence (TIRF) microscopy can be used in a wide range of cell biological applications, and is particularly well suited to analysis of the localization and dynamics of molecules and events near the plasma membrane. The TIRF excitation field decreases exponentially with distance from the cover slip on which cells are grown. This means that fluorophores close to the ...

This contribution presents an asymptotic formulation for the stick-slip behaviour of incomplete contacts under oscillatory variation normal load, moment, shear load and differential bulk tension. The description allows us not only to approximate size slip zones during steady-state a cyclic problem without knowledge geometry or contact law, but provides solution when all known analytical solutio...

High-strength bolted shear connectors (HSBSCs), which can be demounted easily and efficiently during deconstruction, are recommended to replace the conventional steel studs in steel–concrete composite beams (SCCBs) meet requirements of sustainable development. The existing investigations on behavior HSBSCs mainly focus positive moment area beams, concrete slab is compress condition. In this pap...