2010.08.24

Room 73C2, 7th floor, Engineering 2nd Bld, Hongo Campus

Prof. Dr.-Ing. habil. Lothar Gaul
       Institute of Applied and Experimental Mechanics,
       Universität Stuttgart

Title：1. Semi-active Control of Friction Dampers in Simulations and Experiments
       2. Modeling of Bolted Joints in Automotive Structures

Abstract：

1. Semi-active Control of Friction Dampers in Simulations and Experiments

Reduction of structural vibrations is of major interest in mechanical engineering for lowering sound emission of vibrating structures, improving accuracy of machines and increasing structure durability. Besides design optimization and passive damping treatments active structural vibration control can be applied to reduce unwanted vibrations. In this contribution, two semi-active control laws for control of friction dampers are derived and investigated in simulations and experiments.

2. Modeling of Bolted Joints in Automotive Structures

Vibration properties of most assembled mechanical systems depend on frictional damping in joints. The non-linear transfer behavior of the frictional interfaces often provides the dominant damping mechanism in a built-up structure and plays an important role in the vibratory response of the structure. This seminar gives a short overview of three different approaches to damping modeling based on the contact distribution in joints, such as Local Joint Models, Zero Thickness Finite Elements and Thin Layer Finite Elements.

Schedule：13:30～15:00 Tuesday 24th August, 2010

Place：Room 73C2, 7th floor, Engineering 2nd Bld, Hongo Campus

Attached file： 第63回公開セミナー.pdf