塑性碰撞 的英文怎麼說
中文拼音 [sùxìngpèngzhuàng]
塑性碰撞
英文
plastic collision- 塑 : 動詞(塑造) model; mould
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 碰 : 動詞1 (一物體突然接觸另一物體; 撞擊) touch; bump 2 (碰見; 遇到) meet; run into 3 (試探 ) tr...
- 撞 : 動詞1 (猛然碰上) collide; strike; knock; bump against; run into 2 (碰見) bump into; run into;...
- 碰撞 : 1 (猛然碰上) collide; run into; knock against; run foul of; crash 2 [物理學] collision; impact;...
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Roll over protective structure ( rops ) is a device which installs on out of construction vehicle. the main functions are : when the vehicle rolling over. rops can prevent the vehicle from rolling over further, and reduce the possibility of rolling vehicle injures operator ; when the vehicle traveling on freezing soil. concrete and rock, it has large resist continuous impact ability ; when the vehicle overturning rops can support the whole vehicle. arrangement of falling object protective structure ( fops ) can block objects ( such as trees, rocks ) so that supply protection for operator. this problem is that research rolling over and falling objects protective structure of bulldozer by learning research condition of rops / fops and relative lay down international standard. on the base of theory analysis. detrudes counting formula of rops / fops deformation through founding mechanics analysis model of rops / fops at the stage of elasticity and plastoelastic. and finds a set of feasible nonlinear finite element analysis counting. lt calculates rops / fops plastoelastic deforma variable of 320hp bulldozer, bulldozer has been carried out by optimizing design method
其主要功能是:當車輛滾翻時, rops能刺入未凍土壤而阻止車輛的進一步滾翻,降低滾翻的車輛對系著安全帶司機軋傷的可能性;保證rops在碰撞和沖擊變形不大的地面(如凍土、混疑土上、巖石)時,能具有相當大的抗連續沖擊能力;當車輛已經處于顛覆狀態時,已經變形的rops應能支撐住整車。落物保護裝置(簡稱fops ) ,其構件的布置方式要能遮蔽墜落的物體(如,樹木、巖石等) ,以便對司機提供適當的保護。本課題主要通過了解國內外有關對rops fops的研究情況和有關國際標準的制定,對大型推土機傾翻和落物保護裝置進行研究,在理論分析的基礎上,通過建立rops fops的力學分析模型,推導彈性、彈塑性階段rops fops變形的計算公式,建立一套可行的rops fops的非線性有限元分析計算方法。Therefore, how to ensure the simulation precision and accuracy is crucial to engineering applications. further improve the automated theory, and continually enhance the accuracy of simulated body structure is the focus of research on anti - collision simulation
基於一步成形逆有限元方法可以對車身結構件的成形厚度和塑性應變進行預示,改進這一方法,並應用於車身結構件碰撞計算模擬中。In actual engineering problems such as metal forming, structure crashworthiness et al., there are a great number of interface problems with elasto - plastic large deformation. when such large deformation or distortion is solved by finite element method, it must remesh process must be developed to get the less accurate numerical result
在金屬成型、結構碰撞、穿甲等工程領域存在大量的彈塑性大變形接觸問題,用有限元法模擬這些過程時,由於變形畸變的存在,往往需要採用網格重劃分才能得到較為準確的計算結果。The model describes the force - displacement relationship and the relationship between the contact radius and the displacement
模型描述了彈塑性點正碰撞的接觸力和變形量、變形量和接觸半徑的關系。Methods of testing plastics - thermoplastics pipes, fittings and valves - true impact rate boundaries of pipes
塑料試驗方法.第11部分:熱塑性塑料管接頭和閥門.試驗方法1108a :管界面限定碰撞率In the positive - issue research of bird impact, the thesis carefully explores the basic theories, finite element numerical method and key techniques of the solution process in ls - dyna3d software system for contact - impact issue of viscoelastic bodies at large deformation. the well - chosen cases examine the accuracy of solutions in ls - dyna3d for large deformation impact issues. under the proof work, the incremental constitutive equation of bilinear and nonlinear viscoelastic materials are derived, coded and verified in ls - dyna3d
在鳥撞正問題的研究中,本文詳細推導了大變形粘彈性接觸-碰撞有限元分析的基本理論、數值計算方法、求解過程、關鍵技術以及上述內容在ls - dyna3d中的具體應用,算例考察了ls - dyna3d在求解碰撞以及大變形問題上的計算精度,同時推導了線彈性材料、雙線性彈塑性材料以及非線性粘彈性材料增量法迭代方程,編制了相應的用戶自定義材料子程序,並進行了子程序驗證。In view of the conveyor modular plastic conveyor belt use, and methods of transmission using sprocket - driven conveyor belt so hard hunting, skewed, and because scallops can withstand cutting solid collision, and oil, water - resistant properties. make use of the industry will not produce in the maintenance problems, particularly in the replacement of a conveyor belt more to reduce overhead
由於此類輸送機使用模塊式塑料輸送帶,而且傳動方式系採用鏈輪驅動,所以輸送帶不易蛇行、偏斜,並且由於帶子厚實可以經得起切割、碰撞,及耐油、耐水等特性,使得各業界使用時不致在維修保養上產生困擾,尤其在更換輸送帶上更減少一筆開銷。In order to reduce the losses suffered from collision between passenger trains, a new design method for the car body structure of motor car and trailer is advanced. car body structures are made up of three parts with diffferen tstiffness, by carefully designed. the parts of the front and the end are the wea kstiffness structure to absorb energy through plastic deformation in the collision. the middle part, where only elastic deformation occurs, is an elastic deformati on structure with strong stiffness. as the passenger train runs normally, car body structure measure up to regulation of intensity and stiffness in the standards
為了減輕客運列車碰撞事故造成的損失,實現被動安全保護,對組成列車的動車、客車車體結構提出了新的設計方法,重新分配車體各部分剛度,設計出具有合適吸能結構的耐沖擊車體,車體結構均按前、中、后三種縱向剛度設置,前後兩部分為可以產生塑性變形的弱剛度吸能結構,中間部分為僅產生彈性變形的強剛度彈變結構。Once collision accident occurred when the train is moving with fairly high speed, the energy - absorbing structure produces large plastic deformation along the direction needed to absorb sufficient energy, at the same time, the deceleration must be controlled within the endurable limits to human body
當列車在正常運行時,車體有足夠的強度和剛度,需要滿足有關規范規定的強度、剛度要求;在較高速下發生碰撞事故時,吸能結構能夠沿所需方向產生塑性大變形吸收足夠沖擊動能,保證機器間和乘客區不發生破壞,並延緩碰撞作用時間,降低碰撞瞬間最大減速度,使撞擊減速度在人體承受范圍內。分享友人