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本文利用“两变量法”[1]和“混和摄动法”[2]研究了正交各向异性矩形板在非均布横向载荷作用下的非线性弯曲问题,在四边固定条件下,得到了一致有效渐近解. 相似文献
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THE PROBLEMS OF THE NONLINEAR UNSYMMETRICAL BENDING FOR CYLINDRICALLY ORTHOTROPIC CIRCULA RPLATE(I) 总被引:1,自引:1,他引:0
THEPROBLEMSOFTHENONLINEARUNSYMMETRICALBENDINGFORCYLINDRICALLYORTHOTROPICCIRCULARPLATE(I)QinSheng-Ii(秦圣立)HuangJia-yin(黄家寅)(Quf... 相似文献
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I-Intr0ducti0nThebendingproblemofcircularthinplateisimriartantbothintheoryandinengineeringpractice,butbecausethebasicequationsoftheproblemsofnon-linearunsymmetricalbendingf0rcircularthinplate'arenonlineardifferentialequations,itisquitedifficulttoobtainana… 相似文献
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Electrospinning is a straightforward method to produce micro/nanoscale fibers from polymer solutions typically using an operating voltage of 10 kV–30 kV and spinning distance of 10 cm–20 cm. In this paper, polyvinyl pyrrolidone (PVP) non-woven nanofibers with diameters of 200 nm–900 nm were prepared by low-voltage near-field electrospinning with a working voltage of less than 2.8 kV and a spinning distance of less than 10 mm. Besides the uniform fibers, beaded-fibers were also fabricated and the formation mechanism was discussed. Particularly, a series of experiments were carried out to explore the influence of processing variables on the formation of near-field electrospun PVP nanofibers, including concentration, humidity, collecting position, and spinning distance. 相似文献
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圆柱型正交各向异性圆形薄板的非线性非对称弯曲问题(I) 总被引:4,自引:4,他引:0
本利用“两变量法”[1]研究了圆柱型正交各向异性圆形薄板在非均布横向载荷作用下的非线性非对称弯曲问题,并得到在周边为可移夹支条件下的本问题的一致有效渐近解。 相似文献
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AN INVESTIGATION ON METERIAL PROPERTIES OF NON-HOMOGENEOUS CYLINDRICALLY ORTHOTROPIC CIRCULAR PLATES
I.IntroductionCarrieralldlthacalllha\'eshownqualitativelythattheInaterialcannotbeassumedtobeorthotropicatthecentreofthecylindricallyorthotropiced-cularplates.The}'suggestedanapproximatemethodfortheplane-stresssolutionofcircularplatesunderUlliforlnpressure… 相似文献
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分析方解石和氟化钙晶体的透射比特性,叙述设计方解石/氟化钙棱镜的过程.提出方解石/氟化钙棱镜由两个中间有空隙、几何形状相同的直角三角棱镜组成.最后对设计的棱镜测试结果进行了讨论。 相似文献