stability

stability
stability is best defined as the opposite of instability, which is the occurrence of large structural deformations which are not the result of material failure.
Note: passenger vehicles exhibit varying characteristics depending upon test conditions and trim. Test conditions refer to vehicle conditions such as wheel loads, front wheel alignment, tire inflation pressure, and also atmospheric and road conditions which affect vehicle parameters. For example, temperature may change shock absorber damping characteristics and a slippery road surface may change tire cornering properties. Trimhas been previously defined as the vehicle operating condition within a given environment, and may be specified in part by steer angle, forward velocity, and lateral acceleration. Since all these factors change the vehicle behavior, the vehicle stability must be examined separately for each environment and trim. For a given set of vehicle parameters and particular test conditions, the vehicle may be examined for each theoretically attainable trim. The conditions which most affect stability are the steady-state values of forward velocity and lateral acceleration. In practice, it is possible for a vehicle to be stable under one set of operating conditions and unstable in another. - neutral stability

Mechanics glossary. 2013.

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