| 1. | It is clearly that only two geometrical parameters i . e . maximal misalignment angle ( ) and distortion width ( s ) need to be determined experimentally 纤维弯曲模型( fdm )只有两个几何参数(最大纤维偏转角和变形区宽度)需要由实验确定。 |
| 2. | There are four zones in slide mass with different deformation , deformation degree of these four zones are undeformation , light , weak and strong 根据滑体的变形迹象与变形程度将古滑体分为未变形区、轻微变形区、弱变形区和强变形区四个区域。 |
| 3. | From ansys solver , aluminum alloy rivet ' s minimal ratio is 5 to finally , we have made some experiments by using aluminum alloy and stainless steel rivets 对5mm的铝合金铆钉,铆接变形区最小径高比为5 : 4 。使用铝合金和不锈钢铆钉进行电磁铆接实验。 |
| 4. | When severely distorted elements appear , the meshes in the window are regenerated by the advancing - front method and flow properties are interpolated from the old mesh to the new one linearly 当出现严重扭曲的网格单元时,采用阵面推进法重新生成变形区内的网格,并通过线性插值传递流动信息。 |
| 5. | To eliminate the residual stress formed during the process of al board cold rolling , the distribution of stress in the deformation region was stimulated by elas - plastics large deformation finite element analysis 摘要?消除铝板冷轧过程中?生的残馀应力,采用弹塑性大变形有限元法对变形区内残馀应力的分布进行数值模拟。 |
| 6. | The correctness was testified through experimentation , which verifies that it is an effective analyzing method for continuous extrusion industry application to estimate the load on the extrusion wheel and chamber 根据各分区的变形特点,利用塑性力学理论得出接触应力的解析表达式,讨论连续挤压变形区接触应力的分布特点与规律。 |
| 7. | There are three types of wrinkle which frequently occur in the sheet metal forming process : flange wrinkling , wall wrinkling , and elastic buckling of the undeformed area owing to residual elastic compressive stresses 在金属板料成型加工中通常存在三种类型的起皱现象:法兰起皱,侧壁起皱,和由于残余压应力在未变形区产生的弹性变形。 |
| 8. | The thickness varies according to the half - apex angle , and the forming limit half - apex angle is the key which nc incremental sheet metal parts forming process succeeds , it relates to the material and thickness of the sheet metal 变形区厚度的变化与成形半顶角有关,其中,成形极限半顶角是数控渐进成形能否成功的关键,它不仅与材料有关,而且与板料厚度有关。 |
| 9. | The longitudinal young ' s modulus and the in - plane shear modulus decrease with the increase of the maximum misalignment and the distortion width , but the transverse young ' s modulus and main poisson ' s ratio have no obvious change 研究了不同的最大纤维偏转角和变形区宽度对层合板弹性常数的影响,发现随着和的增加纵向弹性模量和面内剪切模量逐渐降低,横向弹性模量和主泊松比变化不明显。 |
| 10. | Based on the research about state of metal in groove , an new five zone describing model for continuous extrusion process was established to describe the process , and its analytic solution of stress calculation for each sub - zone was given 摘要在连续挤压技术研究的基础上,通过观测挤压轮槽金属的变形形貌,提出了“五分区”的连续挤压变形过程描述模型,构成了连续挤压轮沟槽变形区系统、完整、准确的表征。 |