Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis r...Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis remain significant challenges.This research aims to develop an effective computational method for analyzing the free vibration of functionally graded(FG)microplates under high temperatures while resting on a Pasternak foundation(PF).This formulation leverages a new thirdorder shear deformation theory(new TSDT)for improved accuracy without requiring shear correction factors.Additionally,the modified couple stress theory(MCST)is incorporated to account for sizedependent effects in microplates.The PF is characterized by two parameters including spring stiffness(k_(w))and shear layer stiffness(k_(s)).To validate the proposed method,the results obtained are compared with those of the existing literature.Furthermore,numerical examples explore the influence of various factors on the high-temperature free vibration of FG microplates.These factors include the length scale parameter(l),geometric dimensions,material properties,and the presence of the elastic foundation.The findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the results of this research will have great potential in military and defense applications such as components of submarines,fighter aircraft,and missiles.展开更多
Schematic illustration of the PEO of the carbon steel in 8 g·L^-1 NaAlO2+2 g·L^-1 NaH 2PO4:(a)the sample before the application of anodic current,(b)the moment after the application of anodic current,(c)the ...Schematic illustration of the PEO of the carbon steel in 8 g·L^-1 NaAlO2+2 g·L^-1 NaH 2PO4:(a)the sample before the application of anodic current,(b)the moment after the application of anodic current,(c)the deposition of an aluminum phosphates or AAP layer on the steel surface,(d)the initiation of plasma discharges through the breakdown of the dielectric layer,(e)stable discharges at later stage of PEO.展开更多
The thesis discusses how subjectivity is shown through spatial deixis in the language of English news.Based on Langacker' s Construal Theory,especially the aspect of construal perspective,the thesis employs the co...The thesis discusses how subjectivity is shown through spatial deixis in the language of English news.Based on Langacker' s Construal Theory,especially the aspect of construal perspective,the thesis employs the conceptualization in Cognitive Linguistics to explain the cause of subjectivity in English news.Then,it makes a further philosophical and social analysis of the motivation of subjectivity in news language.On the one hand,subjectivity is a basic attribute which helps people to cognize and reflect things.On the other hand,subjectivity is an important criterion for one to judge whether the nature of the news is "objective" or not.展开更多
文摘Recent advancements in additive manufacturing(AM)have revolutionized the design and production of complex engineering microstructures.Despite these advancements,their mathematical modeling and computational analysis remain significant challenges.This research aims to develop an effective computational method for analyzing the free vibration of functionally graded(FG)microplates under high temperatures while resting on a Pasternak foundation(PF).This formulation leverages a new thirdorder shear deformation theory(new TSDT)for improved accuracy without requiring shear correction factors.Additionally,the modified couple stress theory(MCST)is incorporated to account for sizedependent effects in microplates.The PF is characterized by two parameters including spring stiffness(k_(w))and shear layer stiffness(k_(s)).To validate the proposed method,the results obtained are compared with those of the existing literature.Furthermore,numerical examples explore the influence of various factors on the high-temperature free vibration of FG microplates.These factors include the length scale parameter(l),geometric dimensions,material properties,and the presence of the elastic foundation.The findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the findings significantly enhance our comprehension of the free vibration of FG microplates in high thermal environments.In addition,the results of this research will have great potential in military and defense applications such as components of submarines,fighter aircraft,and missiles.
文摘Schematic illustration of the PEO of the carbon steel in 8 g·L^-1 NaAlO2+2 g·L^-1 NaH 2PO4:(a)the sample before the application of anodic current,(b)the moment after the application of anodic current,(c)the deposition of an aluminum phosphates or AAP layer on the steel surface,(d)the initiation of plasma discharges through the breakdown of the dielectric layer,(e)stable discharges at later stage of PEO.
基金granted by "On the Subjectivity of Spatial Deixis in the Language of English News"(No.YJSZ201403) of Graduate Innovation Foundation of Yantai University(GIFYTU)"On Speech Meaning from Communicative Information Perspecive(10DWXJ07)" of Shandong Social Science Progran+1 种基金"Research on News Evaluation Based on English-Chinese Parallel Corpora" of Shandong College HumanitiesSocial Science Project "Analysis of Media English Evaluation Driven by Corpus" Project of Young Teachers Fund of Yantai University
文摘The thesis discusses how subjectivity is shown through spatial deixis in the language of English news.Based on Langacker' s Construal Theory,especially the aspect of construal perspective,the thesis employs the conceptualization in Cognitive Linguistics to explain the cause of subjectivity in English news.Then,it makes a further philosophical and social analysis of the motivation of subjectivity in news language.On the one hand,subjectivity is a basic attribute which helps people to cognize and reflect things.On the other hand,subjectivity is an important criterion for one to judge whether the nature of the news is "objective" or not.
