Accession Number : ADA322891

Title :   Design Methodology for Round Wire Compression Springs.

Descriptive Note : Final rept.,

Corporate Author : ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET WEAPONS LAB

Personal Author(s) : Farrara, Richard

PDF Url : ADA322891

Report Date : NOV 1996

Pagination or Media Count : 55

Abstract : A concise, logical method for designing round wire, compression springs is provided. An overview of the method is that the type of available material (M) should first be selected on the basis of what type of service is required, i.e., fatigue life, operating temperature, large loads, cost. Then either performance (P) or space (S), not both, should be selected and the remaining parameter, S or P, will be determined via the standard spring equations. Essentially, algebraic equations can describe the approach, P + M = S where P and M are selected and S is calculated, or S + M = P where S and M are selected and P is calculated. An approach that is NOT recommended is to select P and S and calculate M (P + S = M). It is easily shown that this approach can result in the condition where the material required to provide the specified performance in the allocated space does NOT exist. The background information (material available, manufacturing and testing considerations, fatigue, presetting) needed for designing a compression spring is provided. Also, guidance is provided on which parameters should be specified and how to determine the tolerances necessary for producibility and function.

Descriptors :   *COMPRESSION, *SPECIFICATIONS, *SPRINGS, REQUIREMENTS, PRODUCTION, FATIGUE LIFE, WIRE, ALGEBRA, COSTS, SHEAR STRESSES, BUCKLING, EQUATIONS.

Subject Categories : Machinery and Tools

Distribution Statement : APPROVED FOR PUBLIC RELEASE