Accession Number:

AD0611573

Title:

NORMAL MODE THEORY FOR THREE-DIRECTIONAL MOTION

Descriptive Note:

Interim rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

Report Date:

1965-01-05

Pagination or Media Count:

43.0

Abstract:

Normal mode theory is applied to undamped linear elastic structures represented as lumped parameter systems undergoing translational motion in three directions. The derived equations are primarily concerned with the response of such structures subject to applied forces and base motions and the inertia forces required to calculate stress in each mode of vibration. Additional relationships are presented for special types of loading and for the effective mass acting in a given mode due to base motion. Similar equations are summarized in an appendix for structures with six directions of motion, namely, three translational directions and three rotational directions subject to prescribed assumptions.

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE