Accession Number : AD0478630


Title :   MODELING STUDIES ON THE RESPONSE OF WEAPON FOUNDATIONS IN SOILS


Descriptive Note : Final rept. on Phase 2


Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TX DEPT OF MECHANICAL SCIENCES


Personal Author(s) : Westine, Peter S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/478630.pdf


Report Date : 10 Mar 1966


Pagination or Media Count : 93


Abstract : The design of a portable model foundation loading device capable of applying square wave impulses with forces up to 1200 lbs for durations between 10 and 120 milliseconds is described. The model loading device is used to simulate the load on the non-recoiling parts of a howitzer foundation in both sands and clays. An important part of this program is the comparison between residual displacements and rotations resulting from loading a geometrically similar 1/5 scale, replica model and firing a 105 mm, M2A2 howitzer. Through this program, considerable insight has been obtained into the dynamic response of artillery foundations. The foundation response lies in neither a quasi-static analysis nor an impulse analysis realm. Load level, the duration of loading, soil strength, the mass of the foundation, and the mass moment of inertia of the foundation are all significant in determining the response of artillery foundations. Furthermore, vertical translational, horizontal translational, and rotational responses of the foundation should be coupled in any dynamic analysis of the response. Included are plans for an experimental program to develop data for analyzing the response of artillery foundations; also, a discussion of some experimental results in clay soil.


Descriptors :   *SOIL MECHANICS , CLAY , DYNAMICS , EXPERIMENTAL DATA , FEASIBILITY STUDIES , FIRING TESTS(ORDNANCE) , FOUNDATIONS(STRUCTURES) , GUNS , HOWITZERS , MATHEMATICAL MODELS , MOTION , PLANNING , RECOIL MECHANISMS , SAND , SCALE , SIMULATION , STABILITY


Subject Categories : Soil Mechanics
      Guns


Distribution Statement : APPROVED FOR PUBLIC RELEASE