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橡膠彈簧的特點和橡膠彈簧的靜彈性特性

2014-08-13 09:46 作者:管理員14 來源:未知 瀏覽: 字號:

摘要:1 橡膠彈簧的特點 橡膠彈簧與鋼制彈簧相比,具有下列優點: 1)形狀不受限制,各個方向的剛度可以根據設計要求自由確定。 2)彈性模量較小,可以得到較大的彈性變形,容易實現理想的非線性特性。 3)具有較高內阻,對突然沖擊和高頻振動的吸收,以及隔聲具有良好

     1 橡膠彈簧的特點
      橡膠彈簧與鋼制彈簧相比,具有下列優點:
     1)形狀不受限制,各個方向的剛度可以根據設計要求自由確定。
     2)彈性模量較小,可以得到較大的彈性變形,容易實現理想的非線性特性。
     3)具有較高內阻,對突然沖擊和高頻振動的吸收,以及隔聲具有良好效果。
     4)同一彈簧能同時承受多方向載荷,結構簡單。
     5安裝和拆卸簡便,無福潤滑,有利于維護和保養。
     橡膠彈簧的缺點是耐高、低沮性和耐油性比鋼彈簧差。
     橡膠彈簧使用的是枯·彈性材料,力學性能比較復雜,精確計算它的彈性特性相當困難。
   2 橡膠材料的靜彈性特性
公式
    橡膠材料的切變模量G與橡膠材料的牌號和組成成分幾乎無關,而與橡膠的硬度有關。成分不同,硬度相同的橡膠其切變模量之差很小。在設計時.切變模量G的值可由下式計算或由圖16.9-1 查取。
橡膠的切變量和硬度的關系
 
公式
公式
        對于買切變形,橡膠材料在受剪切時,除剪切變形外,還同時產生彎曲變形,用剪切影響系數Ij表示其關系,即
公式
 
 
 
(責任編輯:laugh521521)
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