Allis-Chalmers Corporation

About: Allis-Chalmers Corporation is a based out in . It is known for research contribution in the topics: Circuit breaker & Bearing (mechanical). The organization has 1891 authors who have published 2882 publications receiving 24373 citations.

A New Fuel Cell Cathode Catalyst

Abstract: THE use of metal phthalocyanines as catalysts for the oxidation of organic compounds has been described in the literature. A number of papers by C. Paquot have reported the catalytic activity of the nickel phthalo-cyanine in the oxidation of long-chain fatty acids and their esters1, saturated ketones2, benzene hydrocarbons such as toluene and ethylbenzene3, cyclohexane hydrocarbons4, and pinene5. In addition, M. Baldwin reported the oxidation of olefins, principally isobutylene, by copper phthalocyanine supported on pumice6. A. Cook7 described the activity of iron phthalocyanine for the catalytic decomposition of hydrogen peroxide. A slow degradation of the catalyst was observed which was ascribed to a complex formed between the peroxide and the phthalocyanine. On the basis of these reports, a number of phthalocyanines were tested as cathode catalysts in fuel cells.

Simulation of Symmetrical Induction Machinery

Abstract: The effectiveness of an analog computer in studying the performance of induction machinery is demonstrated with computer results which show the dynamic behavior of 2-phase and 3-phase machines during balanced and unbalanced operation. The computer simulation for these various modes of operation is conveniently obtained from the equations which describe the symmetrical induction machine in an arbitrary reference frame. Of particular interest is the representation which is used to simulate the opening and closing of a stator phase. This simulation would be useful in studying the performance of the induction machine when used in conjunction with electronic switching devices. The examples which are given can be used directly, or in a slightly modified form, to study various practical problems. Also, these examples should serve as guideposts in selecting the best reference frame or the best combination of reference frames to be used in the computer simulation of systems which have more than one machine.

Stability of Heterogeneous Aeolotropic Cylindrical Shells Under Combined Loading

Abstract: A theoretical analysis of the buckling problems of heterogeneous aeolotropic cylindrical shells under combined axial, radial, and torsional loads is presented. Four boundary conditions at each end of the cylinder are satisfied for the case of both ends hinged or that of both ends clamped. Classical thin shell theory of small deflection is followed. Because only six elastic coefficients are required out of the usual 21 for a general aeolotropic body, it is possible to solve Flugge's differential equations of equilibrium by assuming suitable functions for the displacements of the middle surface. By the superposition of these solutions, a general solution that satisfies the boundary conditions can be reached. If the thin shell is laminated from layers of different materials, the resultant forces and moments of an element are integrated from layer to layer by considering that the six elastic coefficients are piecewise continuous. Orthotropic and isotropic materials are particular cases of this analysis.

Electric powered wheel

Abstract: A compact electric wheel unit using a high torque, moderate speed inside out electric motor and a planetary speed reducer wherein a friction brake is mounted on a stationary ring gear component of the planetary gearing. In one embodiment, lubricating and cooling fluid is circulated through the motor, gear train and brake.