The damage effects of water sorption on the mechanical properties of the hydroxyapatite particle reinforced Bis-GMA/TEGDMA copolymer （HA/Bis-GMA/TEGDMA） h-ave been predicted using 3D finite cell models. The plastici...The damage effects of water sorption on the mechanical properties of the hydroxyapatite particle reinforced Bis-GMA/TEGDMA copolymer （HA/Bis-GMA/TEGDMA） h-ave been predicted using 3D finite cell models. The plasticizer effect on the polymer matrix was considered as a variation of its Young＇s modulus. Three different cell models were used to determine the influence of varying particle contents, interphase strength and moisture concentration on the debonding damage. The stress distribution pattern has been examined and the stress transfer mode clarified. The Young＇s modulus and fracture strength of the Bis-GMA/TEGDMA composite were also predicted using the model with and without consideration of the damage. ine Iormer results with consideration of the debonding damage are in good agreement with existing literature experimental data. The shielding effect of our proposed model and an alternative approach were discussed. The FCC cell model has also been extended to predict the critical load for the damaged and the undamaged composite subject to the 3-point flexural test.展开更多
虽然笔者对棒球一窍不通,但仍觉得这项运动较近日的金融市情有趣,可见笔者此刻迷失的心情。未知众散户可有同感？今年波士顿红袜队（Boston Red Sox）非但无缘问鼎美联东区王座,还在遥遥领先10场的局面之下,沦落到被坦帕湾光芒（Tampa B...虽然笔者对棒球一窍不通,但仍觉得这项运动较近日的金融市情有趣,可见笔者此刻迷失的心情。未知众散户可有同感？今年波士顿红袜队（Boston Red Sox）非但无缘问鼎美联东区王座,还在遥遥领先10场的局面之下,沦落到被坦帕湾光芒（Tampa Bay Rays）抓屁股的窘境。在大部分人眼中,这简直是不可思议。展开更多
基金Project supported by the Research Committee of the Hong Kong Polytechnic University (No.G-U042).
文摘The damage effects of water sorption on the mechanical properties of the hydroxyapatite particle reinforced Bis-GMA/TEGDMA copolymer （HA/Bis-GMA/TEGDMA） h-ave been predicted using 3D finite cell models. The plasticizer effect on the polymer matrix was considered as a variation of its Young＇s modulus. Three different cell models were used to determine the influence of varying particle contents, interphase strength and moisture concentration on the debonding damage. The stress distribution pattern has been examined and the stress transfer mode clarified. The Young＇s modulus and fracture strength of the Bis-GMA/TEGDMA composite were also predicted using the model with and without consideration of the damage. ine Iormer results with consideration of the debonding damage are in good agreement with existing literature experimental data. The shielding effect of our proposed model and an alternative approach were discussed. The FCC cell model has also been extended to predict the critical load for the damaged and the undamaged composite subject to the 3-point flexural test.
文摘虽然笔者对棒球一窍不通,但仍觉得这项运动较近日的金融市情有趣,可见笔者此刻迷失的心情。未知众散户可有同感？今年波士顿红袜队（Boston Red Sox）非但无缘问鼎美联东区王座,还在遥遥领先10场的局面之下,沦落到被坦帕湾光芒（Tampa Bay Rays）抓屁股的窘境。在大部分人眼中,这简直是不可思议。
