• 提出了基于脉冲电磁力控制焊接应力变形方法

    New idea to control welding residual stress and distortion with trailing impactive electromagnetic force was given.

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  • 根据宽弯曲过程中的变形应力分布特征提出了一种计算弯曲过程板料厚度弯曲程度变化的新的近似求解方法

    A new approximate solution to thickness reduction of bending sheet is presented by considering the characteristics of deformation and stress distribution.

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  • 焊冲击碾压一种控制薄壁结构焊接应力变形防止裂纹方法

    Weld with trailing impactive rolling (WTIR) is a new technique to reduce the residual stress and distortion and prevent hot cracking of thin-walled structure.

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  • 根据宽板弯曲过程中的变形应力分布特征提出了一种计算弯曲过程板料厚度弯曲程度变化的新的近似求解方法

    A new approximate solution to figuring out thickness reduction in bending sheets is presented in views of the characteristics of deformation and stress distribution.

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  • 试验结果表明流变应力峰值应变变形温度的降低和应变速率的提高而增大

    The results show that the flow stress and peak strain increase with either increasing strain rate or decreasing deformation temperature.

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  • 形变速率相同条件下,变形温度升高试样内部最大形变抗力最大应力呈下降趋势

    The inner maximum resistance force and the maximum stress of the specimen decreases as the deformation temperature increasing.

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  • 压缩永久变形压缩应力松弛性能指标进行经验直线化外推估算,得出特定温度下性能老化时间变化的动力学经验估算方程。

    With calculating property index of compression set and stress relaxation, it obtains a calculation formulation that property changes along with aging time at the special temperature.

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  • 结果表明:实验条件下,流变应力峰值应变变形温度降低应变速率提高而增大

    The results show that the flow stress and peak strain increase with increasing strain rate or decreasing deformation temperature.

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  • 应变速率升高应力-真应变曲线特征平缓”型锯齿”型转变,材料变形软化特征增强

    As the rise of the strain rate, the feature of the true stress - true strain curve changed from "flat" to "serration", and the thermal deformation softening feature was reinforced.

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  • 流变应力峰值应变变形温度升高和应变速率降低而减小

    The results show that the flow stress and peak strain of 300M steel increase with the increase of strain rate or the decrease of deformation temperature.

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  • 根据损伤力学的基本原理,利用测量弹性模量观察金相的方法,研究了在拉拔应力状态变形不断增大,材料的损伤特性

    Based on the damage mechanics and metallography analysis, the characteristics of plastics damage of steel wire under high strain deformation were researched.

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  • 当差应力达到岩石屈服应力扩容非线性应变开始。此外,随应力水平的增加,扩容和非线性变形呈幂函数形式增加。

    The volume dilatation and the non-linear deformation of rock originated, when the differential stress equals to the yield point of rock.

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  • 试样内部各部位应力大小分布均匀,应变速率增大最小应力自由变形区域逐步部移动;

    The effective stress of specimen is inhomogeneous. As the strain rate increases, the minimum stress value moves from the drum-shaped region to the heart of specimen.

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  • 稳态金属材料变形过程中的稳态流变应力模型修正项指流变应力应变的变化而变化的部分。

    The steady state term is the steady flow stress model of metal materials in the semi-hot forming process, and it is a model related to the Z parameter;

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  • 结果表明弹性模量流变应力变形温度升高降低,而流变应力应变速率提高而增大

    Results show that the elastic modulus and flow stress decreases with the increase of temperature, while the stress rises with the strain rate increases.

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  • 结果表明稻田花岗岩强度变形常数应力作用方向不同而发生明显变化。

    The experimental results reveal that the tensile strength and deformation properties of the Inada granite vary with the direction of tensile load.

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  • 结果表明稻田花岗岩强度变形常数应力作用方向不同而发生明显变化。

    The experimental results reveal that the tensile strength and deformation properties of the Inada granite vary with the direction of tensile load.

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