Flange earrings of strong anisotropic sheet metals in deep-drawing process are numerically analyzed by the elastic-plastic large deformation finite element formulation based on a discrete Kirchhoff triangle plate shel...Flange earrings of strong anisotropic sheet metals in deep-drawing process are numerically analyzed by the elastic-plastic large deformation finite element formulation based on a discrete Kirchhoff triangle plate shell element model. A Barlat-Lian anisotropic yield function and a quasi-flow corner theory are used in the present formulation. The numerical results are compared with the experimental ones of cylindrical cup drawing process. The focus of the present researches is on the numerical analysis and the constraining scheme of the flange earring of circular sheets with strong anisotropy in square cup drawing process.展开更多
The influence of stress state on earing behavior in cup drawing of BCC metals is analyzed by use of the modified Tucker method. The results show that, this influence varies with orientations, and that the earing beha...The influence of stress state on earing behavior in cup drawing of BCC metals is analyzed by use of the modified Tucker method. The results show that, this influence varies with orientations, and that the earing behavior can be well predicted by the total slip model.展开更多
目的探讨平衡火罐联合耳部刮痧治疗老年阴虚火旺型失眠的临床效果。方法选取2020年5月—2023年5月在石河子大学第一附属医院治疗的90例老年阴虚火旺型失眠患者,随机分为参照组与研究组各45例。两组患者均给予阿普唑仑口服治疗,在此基础...目的探讨平衡火罐联合耳部刮痧治疗老年阴虚火旺型失眠的临床效果。方法选取2020年5月—2023年5月在石河子大学第一附属医院治疗的90例老年阴虚火旺型失眠患者,随机分为参照组与研究组各45例。两组患者均给予阿普唑仑口服治疗,在此基础上,参照组实施平衡火罐治疗、研究组实施平衡火罐联合耳部刮痧治疗,两组患者持续治疗1个月。比较两组治疗前后的负性情绪[焦虑(self-rating anxiety scale,SAS)、抑郁(self-rating depression scale,SDS)情绪]、睡眠质量(Pittsburgh sleep quality index,PSQI)、生存质量(World Health Organization on quality of life brief scale,WHO-QOL-BREF),以及临床疗效和不良反应发生情况。结果治疗后研究组患者的PSQI评分、SAS评分、SDS评分、WHO-QOL-BREF评分、治疗总有效率均优于参照组,且研究组患者不良反应发生率低于参照组,差异有统计学意义(P<0.05)。结论老年阴虚火旺型失眠患者采用平衡火罐联合耳部刮痧联合治疗具有更好的效果,能够改善患者的睡眠状态,提升患者的睡眠质量,还能缓解患者的焦虑和抑郁情绪,提高生存质量,值得推广使用。展开更多
基金The project supported by the National Natural Science Foundation of China (19832020)Provincial Natural Science Foundation of Jilin, China (200000519)
文摘Flange earrings of strong anisotropic sheet metals in deep-drawing process are numerically analyzed by the elastic-plastic large deformation finite element formulation based on a discrete Kirchhoff triangle plate shell element model. A Barlat-Lian anisotropic yield function and a quasi-flow corner theory are used in the present formulation. The numerical results are compared with the experimental ones of cylindrical cup drawing process. The focus of the present researches is on the numerical analysis and the constraining scheme of the flange earring of circular sheets with strong anisotropy in square cup drawing process.
文摘The influence of stress state on earing behavior in cup drawing of BCC metals is analyzed by use of the modified Tucker method. The results show that, this influence varies with orientations, and that the earing behavior can be well predicted by the total slip model.
文摘目的探讨平衡火罐联合耳部刮痧治疗老年阴虚火旺型失眠的临床效果。方法选取2020年5月—2023年5月在石河子大学第一附属医院治疗的90例老年阴虚火旺型失眠患者,随机分为参照组与研究组各45例。两组患者均给予阿普唑仑口服治疗,在此基础上,参照组实施平衡火罐治疗、研究组实施平衡火罐联合耳部刮痧治疗,两组患者持续治疗1个月。比较两组治疗前后的负性情绪[焦虑(self-rating anxiety scale,SAS)、抑郁(self-rating depression scale,SDS)情绪]、睡眠质量(Pittsburgh sleep quality index,PSQI)、生存质量(World Health Organization on quality of life brief scale,WHO-QOL-BREF),以及临床疗效和不良反应发生情况。结果治疗后研究组患者的PSQI评分、SAS评分、SDS评分、WHO-QOL-BREF评分、治疗总有效率均优于参照组,且研究组患者不良反应发生率低于参照组,差异有统计学意义(P<0.05)。结论老年阴虚火旺型失眠患者采用平衡火罐联合耳部刮痧联合治疗具有更好的效果,能够改善患者的睡眠状态,提升患者的睡眠质量,还能缓解患者的焦虑和抑郁情绪,提高生存质量,值得推广使用。
