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- Because plastic formation is a large deformation problem, logarithm strain is adopted and constitutive relation is simplified as a total theory that ignores elastic deform. 由于塑性成型是大變形問(wèn)題，應變采用對數應變，本構關(guān)系也宜簡(jiǎn)化為忽略彈性變形部分的全量理論。
- Mooney-Rivlin constitutive function is the representative one in rubber materials and FEM is a efficient method to analyze the large deformation problem. Mooney-Rivlin本構模型是橡膠材料中具有代表性的本構模型，有限元法是分析大變形問(wèn)題的有效方法。
- Lagrangian method-based FLAC3D program is especially suitable for solving the nonlinear large deformation problem in rock mechanics engineering,which is very favorable for the design research work on mining engineering. 基于拉格朗日算法的FLAC3D程序特別適合于求解巖土力學(xué)工程中非線(xiàn)性的大變形問(wèn)題,這點(diǎn)是非常適合采礦工程的設計研究工作的。
- plastic large deformation problem 塑性大變形問(wèn)題
- Numerical examples for hypervelocity impact by the coupled method show that the coupled method is a more efficient method to simulation of large deformation problems in impact dynamics. 高速碰撞的系列算例說(shuō)明，耦合算法不但適宜于計算大變形沖擊動(dòng)力學(xué)問(wèn)題，而且由于集兩種方法的優(yōu)點(diǎn)于一身，可以更高效地模擬一些高速碰撞問(wèn)題，提高計算效率。
- Large Deformation Problem of Rubber Ring Compressed in Diameter Direction 橡膠環(huán)直徑方向受壓大變形問(wèn)題
- Large deformation only occurs in the case of very high rotation speed. 只有在轉速極高時(shí)，彈道簧才會(huì )產(chǎn)生局部嚴重變形。
- The results show that for the large deformation MPF of the 3-D surface s... 這個(gè)結果可以作為開(kāi)發(fā)大變形量的多點(diǎn)成形壓力機的理論依據。
- Based on the additional decomposition theorem of deformation gradient (i. e. S-R theorem) and co-moving coordinate technique,a typical nonlinear mechanical problem, contact large deformation of rubber ring radially compressed, was computed by FEM. 本文基于變形梯度和分解定理(S-R定理)和拖帶坐標描述法,應用有限元方法,計算了橡膠環(huán)直徑方向受壓接觸大變形問(wèn)題。
- This paper comes up with the hypothesis of combined flanging coefficient to solve the problem existed in calculating the extended size of inner concave flanging part within the large deformation. 針對計算大變形程度內凹翻邊工件展開(kāi)尺寸存在的問(wèn)題，提出了復合翻邊系數的假設，并給出了一種計算此類(lèi)翻邊工件工藝展開(kāi)尺寸的新方法。
- A beam of channel croas section was analysed closely,. its large deformation and critical moment was given. 本文仔細分析了一個(gè)槽形截面梁的大變形并給出了其臨界彎矩。
- This large deformation is called for rock dilatancy if volume dilation only occurs owing to stress redistribution. 這種大變形如果僅是應力重分布引起的體積膨脹則稱(chēng)為巖石擴容。
- The large deformation degenerates the serviceability seriously,and even jeopardizes the traffic safety. 介紹了國內外有關(guān)混凝土徐變機理與特性的研究進(jìn)展。
- And NMM is a promising numerical method to solve both the continuous and discontinuous deformation problem of rock mass and to unify the finite element method(FEM),discontinuous deformation analysis(DDA) and analytic method. 主要研究了基于有向圖理論的流形元系統節點(diǎn)編碼的優(yōu)化、對應稀疏矩陣的壓縮存儲與流形元總體控制方程的動(dòng)態(tài)連通性分析、分片直接求解法及流形元接觸的開(kāi)一合迭代方法，并開(kāi)發(fā)了對應的e++類(lèi)(elass Solver)。
- Based on the idea,a new extensible bolt is designed for large deformation support of surrounding rock. 室內與現場(chǎng)試驗證實(shí)了新型可伸長(cháng)錨桿協(xié)調圍巖大變形的優(yōu)良性能,可在圍巖大變形支護中推廣應用。
- The method of ICD-fsb offers a reliable technological guarantee for solving the deformation problem of veneer drying, especially the deformation of wood from quick-growing plantation. 生產(chǎn)性試驗證明,此方法為解決單板干燥變形(尤其是速生樹(shù)種材單板變形)提供了可靠的技術(shù)保證,其生產(chǎn)工藝是可行的。 表9參14。
- For the deformation problem of deep foundation, the particularity of bottom soil stress was pointed out and the deformation considering upheaval and consolidation of soil was studied. 在埋深基礎的變形方面指出開(kāi)挖卸荷引起的應力計算方法的特殊性，并提出考慮回彈和固結的基礎沉降計算方法。
- Then, this paper used large deformation contact FEA, and assured the accordance of the finite element model with the actual load. 針對柔輪實(shí)際受載的復雜性,本文對柔輪有限元模型作了獨創(chuàng )性的簡(jiǎn)化,包括對稱(chēng)簡(jiǎn)化、邊界簡(jiǎn)化和輪齒簡(jiǎn)化,既避免了不必要的細節分析,又彌補了理論分析的不足,并獲得了理想的效果。
- A large deformation elastic plastic FEM model is employed to simulate the stretch flanging of V shaped sheet metal parts. 采用彈塑性大變形有限元方法研究了幾何形狀和材料參數對“V”型零件翻邊的影響;
- The stability of single cavern roof is studied with cusp catastrophe model of large deformation circular plate with fixed supports. 采用固支大變形圓板突變模型研究了單井溶腔頂板的穩定性,得出了溶腔頂板巖層失穩的必要條件;
