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Date of Award

5-1997

Document Type

Thesis - Open Access

Degree Name

Master of Aerospace Engineering

Department

Graduate Studies

Committee Chair

Dr. David Kim

Committee Member

Dr. Frank Radosta

Committee Member

Dr. Howard Curtis

Abstract

Federal Aviation Regulations certification criteria for transport aircraft seats require performing dynamic tests using anthropomorphic test dummies. Floor decelerations of the tests are 16g forward with the seat tracks misaligned by up to 10 degrees and 14g downward at a pitch angle of 30 degrees. In this project the dynamic response of the passenger/seat/restraint system is modeled using nonlinear finite element analysis. The interference between a dummy model and the seat is modeled using a contact interaction algorithm. This algorithm did not converge and multiple-point constraints were used to transfer the dummy's inertia load. This approach was validated with the software SOMTA and then used to predict the response of a high energy absorption seat design subjected to the floor deceleration as stated in the FAR. The seat withstood the dynamic loading in both cases. The seat showed poor energy absorption characteristics when subjected to the 14g downward floor deceleration.

Included in

Aviation Commons

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