the incremental sheet metal forming (ismf) process is a new and flexible method that is well suited for small batch production or prototyping. this paper studies the use of the finite element method in the incremental forming process of aa1050 sheets to investigate the influence of tool diameter, vertical step size, and friction coefficient on forming force, spring-back, and thickness distribut...

A silicon force sensor is realized in which the force is measured by compressing a meander shaped polysilicon strain gage. A second gage which is not loaded, is used for temperature compensation, for compensation of bending and stretching stresses in the chip and for common changes in zero load resistor values. It is shown that the output of the bridge is a linear function of the force and is i...

This research treats grasping of an object by a multifingered robot hand. By decomposing the space of contact forces exerted between the jingers and the grasped object into subspaces, we develop a method to determine the dimensions of the subspaces with respect to the connectivity of the grasped object. This approach provides insight into diflerentgrasps basedon a classification into three type...

There are projected shortages in the supply of dentists in Australia, and these shortages are likely to be more evident in areas outside of capital cities. This report explores the geographic distribution of dentists and the differences in supply of dental services to regions defined by remoteness. Remoteness may be thought as the travel time to obtaining goods and services. Australian Statisti...

The problem of force distribution in systems involving multiple frictional contacts between actively coordinated mechanisms and passive objects is examined. The special case in which the contact interaction can he modeled by three components of forces (zero moments) is particularly interesting. The Moore-Penrose Generalized Inverse solution for such a model (point contact) is shown to yield a s...

This paper deals with robotic systems composed of multiple actuated limbs (such as arms, fingers, or legs) cooperating in the mampulation of an object. The problem of decomposing the system of contact forces exerted between the robot limbs and the object, in order to apply a desired resultant force on the object (and/or to resist to external disturbances) is studied. Enveloping (or “whole-limb”...

– We study the (newtonian) gravitational force distribution arising from a fractal set of sources. We show that, in the case of real structures in finite samples, an important role is played by morphological properties and finite size effects. For dimensions smaller than d − 1 (being d the space dimension) the convergence of the net gravitational force is assured by the fast decaying of the den...