Acupoints are particular areas on the surface of the body through which the Qi and blood of the Zang-fu organs and meridians flow.Acupoints can respond to stimuli and reflect syndromes.Research on the essential morpho...Acupoints are particular areas on the surface of the body through which the Qi and blood of the Zang-fu organs and meridians flow.Acupoints can respond to stimuli and reflect syndromes.Research on the essential morphology of acupoints has two key focuses:anatomical structure and physiological function.The structure is the material and anatomical basis for the function,while the function is the manifestation of the structure.The two factors not only have profound significance for our understanding of the essence of acupoints,but also have great value for clinical acupuncture and moxibustion practice.Based on the structural and functional characteristics of meridians under different physiological and pathological conditions,this paper illustrates the essence of acupoints and explores the rules and biological basis of the acupoint functions induced by acupuncture and moxibustion.展开更多
The success of compliant mechanism design by structural topology optimization approach depends,to a large extent,on its structural geometry representation scheme.In this work,a novel representation scheme based on pai...The success of compliant mechanism design by structural topology optimization approach depends,to a large extent,on its structural geometry representation scheme.In this work,a novel representation scheme based on pairs of curves is presented.In the representation,the structure is characterized by a set of input/output(I/O) regions.While it is still unknown how the rest of the design space will be occupied by the structure,the I/O regions must exist somewhere because any structure must have parts which interact with its surroundings by way of at least one loading region,one support region,and one output region.For a valid structural design,pairs of Bezier curves are used to connect I/O regions in order to form one single connected load-bearing structure.The boundary is explicitly described,so the need for smoothening of the blurred and jagged edges can be avoided by developing such a representation scheme to directly generate smooth boundary structures.With the scheme,shape and topology can be optimized simultaneously,and the obtained topology solutions have no check-board phenomena nor intermediate zones.A multi-objective genetic algorithm is then applied to couple with the representation scheme for defining and encoding the structural geometry in the form of graph.The solution framework is integrated with a nonlinear fixed grid finite element method(FG-FEM) code for large-displacement analyses of the compliant structures.Simulation results from a displacement inverter indicated that the proposed representation scheme is appropriate.展开更多
基金supported by the Key Project of National Natural Science Foundation of China(81130063)the 973 Project(2012CB 518503)
文摘Acupoints are particular areas on the surface of the body through which the Qi and blood of the Zang-fu organs and meridians flow.Acupoints can respond to stimuli and reflect syndromes.Research on the essential morphology of acupoints has two key focuses:anatomical structure and physiological function.The structure is the material and anatomical basis for the function,while the function is the manifestation of the structure.The two factors not only have profound significance for our understanding of the essence of acupoints,but also have great value for clinical acupuncture and moxibustion practice.Based on the structural and functional characteristics of meridians under different physiological and pathological conditions,this paper illustrates the essence of acupoints and explores the rules and biological basis of the acupoint functions induced by acupuncture and moxibustion.
基金supported by the State Key Laboratory of Robotics and System (HIT)the National Science Fund for Distinguished Young Scholars(Grant No. 50825504)+1 种基金the United Fund of Natural Science Foundation of China and Guangdong Province (Grant No. U0934004),Project GDUPS(2010)the Fundamental Research Funds for the Central Universities(Grant Nos. 2009220040 and 2012ZP0004)
文摘The success of compliant mechanism design by structural topology optimization approach depends,to a large extent,on its structural geometry representation scheme.In this work,a novel representation scheme based on pairs of curves is presented.In the representation,the structure is characterized by a set of input/output(I/O) regions.While it is still unknown how the rest of the design space will be occupied by the structure,the I/O regions must exist somewhere because any structure must have parts which interact with its surroundings by way of at least one loading region,one support region,and one output region.For a valid structural design,pairs of Bezier curves are used to connect I/O regions in order to form one single connected load-bearing structure.The boundary is explicitly described,so the need for smoothening of the blurred and jagged edges can be avoided by developing such a representation scheme to directly generate smooth boundary structures.With the scheme,shape and topology can be optimized simultaneously,and the obtained topology solutions have no check-board phenomena nor intermediate zones.A multi-objective genetic algorithm is then applied to couple with the representation scheme for defining and encoding the structural geometry in the form of graph.The solution framework is integrated with a nonlinear fixed grid finite element method(FG-FEM) code for large-displacement analyses of the compliant structures.Simulation results from a displacement inverter indicated that the proposed representation scheme is appropriate.
