| 1. | The logs should be cut from larger pieces and have alternate strips turned end to end so that warping tendency will be resisted .
加工时，应先将大木料裁成板，然后把相邻两块纹理相反地排列胶合起来，这样可以防止翘曲变形。 |
| 2. | Numerical simulation of warpage of injection - molded parts
注塑制品翘曲变形数值分析模型 |
| 3. | Experimental research of warpage of hdpe injection molded plate
高密度聚乙烯平板翘曲变形实验研究 |
| 4. | The results presented in the paper provide a reasonable basis for studying post _ forge irregular twisting
模拟结果为解决该类叶片锻后冷却过程翘曲变形提供了可靠依据。 |
| 5. | Under certain conditions , the calculating formula of interlayer stress and the stress - distributing diagram in cut planes are provided , and the mathematical model for warpage deformation calculation is also established
建立了翘曲变形的数学模型，讨论了各种工艺参数（层数、扫描线长、成型室温度、层厚等）对翘曲变形量的影响。 |
| 6. | The defects of dehylogenation , deformation and poor waterproof can be overcomed or improved by the accession of fly ash and other composite admixture . better experimental results can be obtained by a lot of experiments
但这类材质的板材防水性能比较差,表面吸湿后出现返卤返霜、翘曲变形等现象,严重影响其装饰性能和应用范围。 |
| 7. | The present study is focused on exploring the reasons of huge warpage and how to reduce it for pa66 / gf30 . the wrong orientation of glass fiber causes the warpage ; however , remodeling the gate and increasing the wall thickness can cause the glass fiber to settle in the right orientation
本文分析了pa66 / gf30制品产生翘曲变形的原因是由于玻璃纤维的取向不合理,通过改变浇口和增加制品的壁厚可以改变玻璃纤维的取向从而有效降低翘曲变形量。 |
| 8. | Abstract : thermally induced stress and the relevant warpage cause by inappropriate mold design and processing conditions are problems that confounded the overall success of injection molding . a thermorheologically simple thermoviscoelastic two - dimension material model is used to simulate the residual stress and warpage within injection molded parts generated during the cooling stage of the injection molding cycle . the initial temperature field corresponds to the end of the filling stage . the fully time - dependent algorithm is based on the calculation of the elastic response at every time step . numerical results are discussed with respect to temperature and pressure
文摘:不均匀的热残余应力及其变形是注塑成型加工中常见的工程问题之一.应用热流变简单材料的二维热粘弹本构方程得到的递推公式，数值模拟了成型中的热残余应力及其翘曲变形，并用数值实验讨论了温度、压力对注塑件残余应力及变形的影响，发现温度变化不均匀是注塑件翘曲变形的最主要原因，其影响远大于压力的作用，与工程实验的结论一致 |
| 9. | The major work is as follows : 1 ) based on dry hull modal analysis of flexure - torsion coupling vibration of unsymmetrical ship structures about longitudinal centerline , a transfer matrix method to calculate the dynamic characteristics is adopted after the parameters of structures are specified . taken both shear effect and warping deformations into account , the point and field transfer matrices are derived , and the influence on dynamic characteristics is computed according to different damaged positions and areas
其主要内容如下： 1 )通过薄壁梁理论求得结构参数后，采用迁移矩阵法，在考虑剪切效应、转动惯量和翘曲影响下，推导出求解破损船体结构的动态特性公式系统的场迁移矩阵和点迁移矩阵，并着重分析了船体不同破损程度和翘曲变形对船体振动的动态特性的影响。 |
| 10. | The warp problem of sls is also stressed and the fundamental cause , developing trend and settlement of this problem is advanced . the influence of the primary process parameters on the warp distortion is reviewed through the orthogonal experiments . the result and solution of this experiment have great guidance to minish the warp distortion of material sls systems
论文还重点研究了sls中的翘曲变形问题，提出了翘曲变形的根本成因、发展趋势及解决方法，并通过正交实验考察了主要加工参数的选取对翘曲变形的影响，实验结果和方法对于具体sls系统减小翘曲变形有很大指导意义。 |
