搜索[案例干貨](méi)ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力
2017-04-15 by:CAE仿真在線 來(lái)源:互聯(lián)網(wǎng)
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)教程圖片1](http://cyyaolei.com/i/g/e9/e99b31a62af8db87c2a4db82fceb3e90r.jpg)
如下圖所示的truss單元
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)教程圖片2](http://cyyaolei.com/i/g/e7/e747edf0752f95ec63a5893e0e542a69r.png "33ed2de354.png")
備注
1.此模型方法可以用于較長(zhǎng)鋼纜的預(yù)應(yīng)力施加,采用truss單元建模,此處建模為簡(jiǎn)化例題僅計(jì)算線跨為16m長(zhǎng)的跨度(為簡(jiǎn)化例題以4m為每節(jié)truss長(zhǎng)度);
2.難點(diǎn)在于需要依靠降溫法來(lái)施加初始應(yīng)力。
3.**XXXXXX**表示解釋說(shuō)明
下面將對(duì)建模求解過(guò)程詳細(xì)解讀:
INP程序
**開(kāi)頭固定格式**
*heading
**產(chǎn)生節(jié)點(diǎn),生成下列幾個(gè)關(guān)鍵節(jié)點(diǎn)**
*node
1, 0.000000, 16.000000, 43.100000**對(duì)應(yīng)點(diǎn)A**
2, 4.000000, 16.000000, 42.725000**對(duì)應(yīng)點(diǎn)B**
3, 8.000000, 16.000000, 42.600000**對(duì)應(yīng)點(diǎn)C**
4, 12.000000, 16.000000, 42.725000**對(duì)應(yīng)點(diǎn)D**
5, 16.000000, 16.000000, 43.100000**對(duì)應(yīng)點(diǎn)E**
**開(kāi)始編寫(xiě)桿件編號(hào)**
*Element, type=T3D2
1, 1, 2
2, 2, 3
3, 3, 4
4, 4, 5
** Region: 賦予導(dǎo)線截面的分組
*Elset, elset=LineMeterialSet_1, internal, generate
1, 4, 1
**為單元集ConductorLine定義截面屬性,材料名稱為L(zhǎng)ineMeterial
*Solid Section, elset=LineMeterial, material=ConductorLine
**定義彈性材料,導(dǎo)線橫截面
0.0006665500,
*Material, name=line
**定義彈性材料,密度為2388 kg/m^3
*Density
2388.,
**定義彈性材料,彈性模量為65GPa,泊松比為0.3**
*Elastic
6.5e+10, 0.3
**定義線膨脹系數(shù)*Expansion
1e-05
將INP程序?qū)階BAQUS中后生成的模型如圖1所示。
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)教程圖片3](http://cyyaolei.com/i/g/9a/9a3921ae0ee3014bf6bfc7269281e436r.jpg "bd77490f37.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元技術(shù)圖片4](http://cyyaolei.com/i/g/94/9435b57b943e6b05f3c3b95204e95ef9r.jpg "9b6b4620e2.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元技術(shù)圖片5](http://cyyaolei.com/i/g/2d/2d3afbaadfb377947c3311307b1ce1e1r.jpg "cce728ef9e.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元技術(shù)圖片6](http://cyyaolei.com/i/g/e3/e301bc24f0b852fe1bab9fd652fdc31er.jpg "1f7cfb24a1.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元技術(shù)圖片7](http://cyyaolei.com/i/g/37/370520fa0ab10ab1a82106be28b2b786r.jpg "b2e169f936.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元分析案例圖片8](http://cyyaolei.com/i/g/f6/f6db9f023bfc1bb9775d02a801e968adr.jpg "910687ac53.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元分析案例圖片9](http://cyyaolei.com/i/g/50/5044a1352047e23ce15d6ed7e13bd0ffr.jpg "1e4db74826.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元分析案例圖片10](http://cyyaolei.com/i/g/bf/bfc79a8d69981a690bc88deda8d5d888r.jpg "5f5f3ad649.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元分析案例圖片11](http://cyyaolei.com/i/g/4f/4fe38ebd24de8e804f92e5f12c2c8ec7r.jpg "2d85cc1b7d.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus靜態(tài)分析圖片12](http://cyyaolei.com/i/g/30/30a934bbcba7a3889a725de9ca51a591r.jpg "476c322ddf.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus靜態(tài)分析圖片13](http://cyyaolei.com/i/g/f2/f2e9e1f22efdd6890e94043f3ed74ff4r.jpg "85ace32574.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus靜態(tài)分析圖片14](http://cyyaolei.com/i/g/eb/eb1cd746e8b382c2d29b2c6a1872e78ar.jpg "7ad8701657.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元圖片15](http://cyyaolei.com/i/g/8f/8faa74fd577f28c21bf6aaf610f39283r.jpg "73ee81d223.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元圖片16](http://cyyaolei.com/i/g/37/37a767bef1d3f1dd6a666b5d378f67f4r.jpg "4fb81772a8.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元圖片17](http://cyyaolei.com/i/g/de/ded756d3e215e0cd031967f29adc8049r.jpg "af9ac232ac.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元仿真圖片18](http://cyyaolei.com/i/g/19/19ff510be32900206346da7a49b61504r.jpg "2575f62419.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元仿真圖片19](http://cyyaolei.com/i/g/29/294addd2c7016d173e44dbb8661afdc0r.jpg "0e4de63f63.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元仿真圖片20](http://cyyaolei.com/i/g/ce/ce3de7d13a0e10834869967ddfb46539r.jpg "f621686def.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元仿真圖片21](http://cyyaolei.com/i/g/3d/3d2e9a629b969894704abac5d5aedd23r.jpg "8899d35e5c.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)資料圖片22](http://cyyaolei.com/i/g/62/627e7553ef10fe7422a30a31d2f6c513r.jpg "ad3a050a69.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)資料圖片23](http://cyyaolei.com/i/g/d3/d35bc980f6eacf703a707fd42612f7ddr.jpg "5a949df3f9.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)資料圖片24](http://cyyaolei.com/i/g/36/368efe358ef123cecfda8474e1b8c933r.jpg "e14f5e96c6.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)教程圖片25](http://cyyaolei.com/i/g/93/93d7a9933c2a175ab59064891d82626dr.jpg "314fd3e07b.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)教程圖片26](http://cyyaolei.com/i/g/40/4012533b7d14f68ac1d8dd9a9ce6c617r.jpg "afe254d79b.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)教程圖片27](http://cyyaolei.com/i/g/ef/efb6f52e11b145d3ba69b5bc31f8aa0er.jpg "d0d24cb64c.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)教程圖片28](http://cyyaolei.com/i/g/b9/b9dbbd1fa6e0bc7ef448e69fb99bb139r.jpg "f604c3944e.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元圖片29](http://cyyaolei.com/i/g/a5/a514553898796f5b40ea83a726aa554ar.jpg "f396e4e02b.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元圖片30](http://cyyaolei.com/i/g/70/709a9130891bd6fb452730bc9db412a9r.jpg "692981ba43.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元圖片31](http://cyyaolei.com/i/g/e5/e57c2b823cbce77e73794019907d9911r.jpg "823a418732.png")
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元圖片32](http://cyyaolei.com/i/g/6d/6df03b9b52179146058f394e8a392b57r.jpg "b7fa279097.png")
新建 job,submit,進(jìn)行分析計(jì)算。
ABAQUS中truss單元運(yùn)用降溫法施加預(yù)應(yīng)力abaqus有限元培訓(xùn)資料圖片33](http://cyyaolei.com/i/g/be/bec2e2472faade76a2aeb704f24542c1r.jpg "6ac5d243b1.png")
得到預(yù)應(yīng)力的施加,通過(guò)調(diào)節(jié)線膨脹系數(shù)和溫度等參數(shù),調(diào)節(jié)預(yù)應(yīng)力的大小。
力=truss單元由于自重或者分析中要求的引起的拉應(yīng)力。
溫度=-力/(膨脹系數(shù)*彈模*鋼絞線面積)。
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