The effect of the deformation condition on the axial compressive precision forming process of tube with curling die was investigated by using a rigid-plastic FEM. The results show that the forming accuracy depends mai...The effect of the deformation condition on the axial compressive precision forming process of tube with curling die was investigated by using a rigid-plastic FEM. The results show that the forming accuracy depends mainly on geometric condition rp/d0, little on tube material properties and friction condition; the relative gap △/2rp of double-walled tubes obtained decreases with Increasing rp/d0, and there is a parameter k for a given to/do or rp/t0, when rp/d0 >k, △/2rp< 1, otherwise △/2rp>1.展开更多
In vitro liver disease modelling,a rapidly evolving field,has become a multidimensional endeavour aimed at more precisely and effectively recapitulating the complexity of hepatic pathophysiology.This review systematic...In vitro liver disease modelling,a rapidly evolving field,has become a multidimensional endeavour aimed at more precisely and effectively recapitulating the complexity of hepatic pathophysiology.This review systematically outlines the essential structural and cellular components of the liver as foundational elements for model design.Emphasising pathophysiological states rather than disease hallmarks,we discuss key liver injury paradigms,including hepatic steatosis,drug-induced hepatotoxicity,fibrogenesis,tumourigenesis and cholestatic injury.Each section integrates cellular mechanisms with model development strategies,highlighting advances in co-culture systems,multicellular organoids and liver-on-a-chip platforms.Although challenges persist,emerging platforms are increasingly capable of capturing multicellular crosstalk,structural heterogeneity and injury-response dynamics.Moving forward,model utility will depend not only on structural mimicry but on the ability to produce biologically meaningful outputs under experimentally controlled conditions.展开更多
基金The authors would like to thank NSFC for support toenable the performing of this research (No. 59775055).
文摘The effect of the deformation condition on the axial compressive precision forming process of tube with curling die was investigated by using a rigid-plastic FEM. The results show that the forming accuracy depends mainly on geometric condition rp/d0, little on tube material properties and friction condition; the relative gap △/2rp of double-walled tubes obtained decreases with Increasing rp/d0, and there is a parameter k for a given to/do or rp/t0, when rp/d0 >k, △/2rp< 1, otherwise △/2rp>1.
基金supported by the German Research Foundation(DFG Ta434/8-1,CRC/TR 412 Project-ID 535081457 and SFB1382,Project-ID 403224013 and ID 556479455).
文摘In vitro liver disease modelling,a rapidly evolving field,has become a multidimensional endeavour aimed at more precisely and effectively recapitulating the complexity of hepatic pathophysiology.This review systematically outlines the essential structural and cellular components of the liver as foundational elements for model design.Emphasising pathophysiological states rather than disease hallmarks,we discuss key liver injury paradigms,including hepatic steatosis,drug-induced hepatotoxicity,fibrogenesis,tumourigenesis and cholestatic injury.Each section integrates cellular mechanisms with model development strategies,highlighting advances in co-culture systems,multicellular organoids and liver-on-a-chip platforms.Although challenges persist,emerging platforms are increasingly capable of capturing multicellular crosstalk,structural heterogeneity and injury-response dynamics.Moving forward,model utility will depend not only on structural mimicry but on the ability to produce biologically meaningful outputs under experimentally controlled conditions.
