The dynamic compressive deformation of cellular titanium with regularly distributed cylindrical pores is investigated to evaluate the effect of shock attenuation and obtain the shock Hugoniot relationship of the mater...The dynamic compressive deformation of cellular titanium with regularly distributed cylindrical pores is investigated to evaluate the effect of shock attenuation and obtain the shock Hugoniot relationship of the material. Dynamic compression experiments are conducted at room temperature using a single-stage light gas gun. The Hugoniot relations between shock wave velocity and particle velocity for the cellular titanium samples with porosities 20% and 30% are obtained. The shock response of the regular cellular titanium shows a clear wave attenuation effect. Numerical simulations are also conducted to supplement the experimental study.Inelastic deformation is observed in the samples using optical micrographs, indicating that the deformation of pores contributes significantly to the shock wave attenuation of the cellular titanium material.展开更多
On the morning of May 15,a commemorative meeting marking the 20th anniversary of the launching of the China-Japan cooperative project of rebuilding the old city wall of Nanjing was held to"remember history,safegu...On the morning of May 15,a commemorative meeting marking the 20th anniversary of the launching of the China-Japan cooperative project of rebuilding the old city wall of Nanjing was held to"remember history,safeguard peace,enhance friendship and jointly create a better future".It was jointly sponsored by the CPAFFC,the China-Japan展开更多
On July 21,a video conference was held in Jinan,Shandong province,to mark the 40th anniversary of friendship-city relations between the province and Japan’s Yamaguchi prefecture.Li Ganjie,secretary of the Communist P...On July 21,a video conference was held in Jinan,Shandong province,to mark the 40th anniversary of friendship-city relations between the province and Japan’s Yamaguchi prefecture.Li Ganjie,secretary of the Communist Party of China’s Shandong Provincial Committee and chairman of the Standing Committee of the Shandong People’s Congress;Kong Xuanyou,Chinese ambassador to Japan;Lin Songtian,president of the Chinese People’s Association for Friendship with Foreign Countries;Tsugumasa Muraoka,governor of Yamaguchi;Uichiro Niwa,president of the Japan China Friendship Association;and Hideo Tarumi,Japanese ambassador to China.展开更多
On the 40th anniversary of the signing of the China-Japan Treaty of Peace and Friendship,we were lucky to have persuaded a veteran diplomat to share with Chinese and Japanese youths his experiences in developing the f...On the 40th anniversary of the signing of the China-Japan Treaty of Peace and Friendship,we were lucky to have persuaded a veteran diplomat to share with Chinese and Japanese youths his experiences in developing the friendship,including some behindthe-scenes stories.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.11572049 and 11472036)
文摘The dynamic compressive deformation of cellular titanium with regularly distributed cylindrical pores is investigated to evaluate the effect of shock attenuation and obtain the shock Hugoniot relationship of the material. Dynamic compression experiments are conducted at room temperature using a single-stage light gas gun. The Hugoniot relations between shock wave velocity and particle velocity for the cellular titanium samples with porosities 20% and 30% are obtained. The shock response of the regular cellular titanium shows a clear wave attenuation effect. Numerical simulations are also conducted to supplement the experimental study.Inelastic deformation is observed in the samples using optical micrographs, indicating that the deformation of pores contributes significantly to the shock wave attenuation of the cellular titanium material.
文摘On the morning of May 15,a commemorative meeting marking the 20th anniversary of the launching of the China-Japan cooperative project of rebuilding the old city wall of Nanjing was held to"remember history,safeguard peace,enhance friendship and jointly create a better future".It was jointly sponsored by the CPAFFC,the China-Japan
文摘On July 21,a video conference was held in Jinan,Shandong province,to mark the 40th anniversary of friendship-city relations between the province and Japan’s Yamaguchi prefecture.Li Ganjie,secretary of the Communist Party of China’s Shandong Provincial Committee and chairman of the Standing Committee of the Shandong People’s Congress;Kong Xuanyou,Chinese ambassador to Japan;Lin Songtian,president of the Chinese People’s Association for Friendship with Foreign Countries;Tsugumasa Muraoka,governor of Yamaguchi;Uichiro Niwa,president of the Japan China Friendship Association;and Hideo Tarumi,Japanese ambassador to China.
文摘On the 40th anniversary of the signing of the China-Japan Treaty of Peace and Friendship,we were lucky to have persuaded a veteran diplomat to share with Chinese and Japanese youths his experiences in developing the friendship,including some behindthe-scenes stories.
