The new filling system is smooth filling without gas gap. It works well in avoiding the generation of defects such as porosity and inclusion. The pouring basin, sprue, runner and the gate of the bolster casting were d...The new filling system is smooth filling without gas gap. It works well in avoiding the generation of defects such as porosity and inclusion. The pouring basin, sprue, runner and the gate of the bolster casting were designed according to the principle of the new filling system. The filling and solidifciation process of the bolster casting were also simulated. It was found that the filling process was smooth, and air entrapment and shrinkage were avoided. Finally, a further validation of the new filling system of bolster casting was carried out in a foundry.展开更多
In the wake of the rapid economy and society development, phenomena such as industri-alisation, urbanisation, marketisation and the ageing of the population have shown an accelerating trend. As a result, mental health...In the wake of the rapid economy and society development, phenomena such as industri-alisation, urbanisation, marketisation and the ageing of the population have shown an accelerating trend. As a result, mental health issues due to these phenomena are increasingly serious, making mental health both concerning public health and societal issues that have a great impact on economic and social development.^1 In 2014, there were 16 million persons with severe mental disor-ders in China.展开更多
Sixteen operating conditions were determined by the standards JIS-7105 and JIS-7106. The strength under complex operating conditions was calculated with HyperWorks and the strength analysis confirmed eight dangerous p...Sixteen operating conditions were determined by the standards JIS-7105 and JIS-7106. The strength under complex operating conditions was calculated with HyperWorks and the strength analysis confirmed eight dangerous points of the metro bolster beam. Since the metro did not consider the impact of traffic lights and sudden road conditions, the load spectra at eight dangerous points were established by counting the running time,passenger flow,site layout,site quantity and turning situations. The fatigue life of the metro bolster beam was projected by the von Mises stress method and the critical plane method. The results of these two methods revealed that the maximum damage occurred at the dangerous point 7,and the fatigue life based on the critical plane method was shorter than that based on the von Mises stress method.Since the McDiarmid model considered the effect of the magnitude and direction of the normal stress and the amplitude of the shear stress,it is closer to the actual situations of the metro. Hence,the McDiarmid model based on the critical plane method is more reasonable,and the method of fatigue life prediction is also suitable to the metro bolster beam of other lines.展开更多
China Zambia diplomatic relations have a long history dating back to as early as 1964, and many cooperative milestones have been celebrated along the way. One that symbolizes the friendship and unity between the two n...China Zambia diplomatic relations have a long history dating back to as early as 1964, and many cooperative milestones have been celebrated along the way. One that symbolizes the friendship and unity between the two nations is the recent two-decade anniver sary of Bank of China （Zambia） Ltd. （BOC （Z） Ltd.）.展开更多
基金supported by the Natural Science Foundation of Liaoning Province (20092061)
文摘The new filling system is smooth filling without gas gap. It works well in avoiding the generation of defects such as porosity and inclusion. The pouring basin, sprue, runner and the gate of the bolster casting were designed according to the principle of the new filling system. The filling and solidifciation process of the bolster casting were also simulated. It was found that the filling process was smooth, and air entrapment and shrinkage were avoided. Finally, a further validation of the new filling system of bolster casting was carried out in a foundry.
文摘In the wake of the rapid economy and society development, phenomena such as industri-alisation, urbanisation, marketisation and the ageing of the population have shown an accelerating trend. As a result, mental health issues due to these phenomena are increasingly serious, making mental health both concerning public health and societal issues that have a great impact on economic and social development.^1 In 2014, there were 16 million persons with severe mental disor-ders in China.
基金National Key Technology Research and Development Program of China(No.2014BAF08B01)Collaborative Innovation Center of Major Machine Manufacturing in Liaoning,China
文摘Sixteen operating conditions were determined by the standards JIS-7105 and JIS-7106. The strength under complex operating conditions was calculated with HyperWorks and the strength analysis confirmed eight dangerous points of the metro bolster beam. Since the metro did not consider the impact of traffic lights and sudden road conditions, the load spectra at eight dangerous points were established by counting the running time,passenger flow,site layout,site quantity and turning situations. The fatigue life of the metro bolster beam was projected by the von Mises stress method and the critical plane method. The results of these two methods revealed that the maximum damage occurred at the dangerous point 7,and the fatigue life based on the critical plane method was shorter than that based on the von Mises stress method.Since the McDiarmid model considered the effect of the magnitude and direction of the normal stress and the amplitude of the shear stress,it is closer to the actual situations of the metro. Hence,the McDiarmid model based on the critical plane method is more reasonable,and the method of fatigue life prediction is also suitable to the metro bolster beam of other lines.
文摘China Zambia diplomatic relations have a long history dating back to as early as 1964, and many cooperative milestones have been celebrated along the way. One that symbolizes the friendship and unity between the two nations is the recent two-decade anniver sary of Bank of China （Zambia） Ltd. （BOC （Z） Ltd.）.
