杨氏模量
维基百科，自由的百科全书
楊氏模數(Young's modulus )是材料力學中的名詞，彈性材料承受正向應力時會產生正向應變，定義為正向應力與正向應變的比值。公式記為
其中，E 表示楊氏模數，σ 表示正向應力，ε 表示正向應變。
目录 |
[编辑] 各種物料的楊氏模數約值
注意：楊氏模量取決於材料的組成。舉例來說，大部分金屬在合金成分不同、熱處理在加工過程中的應用，其楊氏模量值會有5％或者更大的波動。正如以下的很多材料的楊氏模量值非常接近。
Note that Young's Modulus can vary considerably depending on the exact composition of the material. For example, the value for most metals can vary by 5% or more, depending on the precise composition of the alloy and any heat treatment applied during manufacture. As such, many of the values here are very approximate.
| 材料 | 楊氏模量 (E) in GPa | 楊氏模量 (E) in lbf/in² |
|---|---|---|
| 橡膠 (small strain微小应变) | 0.01-0.1 | 1,500-15,000 |
| 低密度聚乙烯 Low density polyethylene | 0.2 | 30,000 |
| 聚丙烯 | 1.5-2 | 217,000-290,000 |
| Polyethylene terephthalate | 2-2.5 | 290,000-360,000 |
| 聚苯乙烯 | 3-3.5 | 435,000-505,000 |
| 尼龍 | 2-4 | 290,000-580,000 |
| Oak wood (along grain) | 11 | 1,600,000 |
| 高強度混礙土High-strength concrete (under compression) | 30 | 4,350,000 |
| 金屬鎂 Magnesium metal | 45 | 6,500,000 |
| 玻璃 (all types) | 10,400,000 | |
| 鋁 alloy | 69 | 10,000,000 |
| 黄銅和青銅 Brass and bronze | 103-124 | 17,000,000 |
| 鈦 (Ti) | 105-120 | 15,000,000-17,500,000 |
| 炭纖維Carbon fiber reinforced plastic (unidirectional, along grain) | 150 | 21,800,000 |
| 合金 and 鋼 | 190-210 | 30,000,000 |
| 鎢 (W) | 400-410 | 58,000,000-59,500,000 |
| 碳化硅 Silicon carbide (SiC) | 450 | 65,000,000 |
| 碳化鎢Tungsten carbide (WC) | 450-650 | 65,000,000-94,000,000 |
| 單碳納米管 [1] | approx. 1,000 | approx. 145,000,000 |
| 鑽石 | 1,050-1,200 | 150,000,000-175,000,000 |
