A snubber is a type of engineered hardware which, due to its internal mechanisms, offers no resistance to slowly applied (i.e., static, such as weight or thermal) loads, but locks up and acts as a restraint when loads are applied quickly (i.e., dynamic loads such as earthquake or fluid hammer). There are two types of snubbers — hydraulic and mechanical — which are shown in Figures 3-100 and 3-101 respectively. Snubbers are modeled in CAESAR II by defining the restraint as XSNB, YSNB, or ZSNB (or with direction cosines). Any restraint defined as such is made inactive during the weight and thermal load cases, but activated for uniform load, wind, or any dynamic loads. Snubbers are discussed later in section 5.
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