Low Dynamic Stiffness

Views Updated: Dec 15, 2025

Abbreviation

LDS

Pronunciation

/loʊ daɪˈnæmɪk ˈstɪfnəs/

There are certain limitations about the conventional rubber mount in the isolation characteristics, the engine mount requirements of the low dynamic stiffness on high-frequency vibration and damping of high on low-frequency vibration is actually a pair of contradictory body.
In the P.R. China, although domestic scholars and designers have gotten some research fruits, most of he parallel machine tools which we have developed have not yet reached the level of practical products and have common problems of low dynamic stiffness and machining precision.
Direct drive technology eliminates the middle transmission parts and has the merits of large thrust, low friction, high dynamic stiffness and high positioning precision.
Three concrete beams are tested under low cycle fatigue loads. The concepts of dynamic module and damage variable are introduced to the decrease rule of stiffness caused by the fatigue cumulative of concrete beams.
Engineering structures are usually excited by non-stationary ambient loads, the ratio of signal to noise is low in dynamic detection. Most of structures in civil engineering are nonlinear. Once a structural element is damaged, the stiffness of that element is reduced.

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