肋環(huán)斜桿型單層球面網殼結構的動力穩(wěn)定性研究

1、南昌大學碩士學位論文肋環(huán)斜桿型單層球面網殼結構的動力穩(wěn)定性研究姓名：郭瑞林申請學位級別：碩士專業(yè)：結構工程指導教師：桂國慶20071222AbstmctABSTRACTB鶴ed∞thetime—IlistoryanaIysismethod，thed”岫ic咖bility0fSchwedlersin咖lay盯sphcrical北ticIllatcdshellsissmdicdwimtl圮丘nitccl鋤ent姐alysis∞ftwa∞AN

2、SYSinthisdis掰：rtation。andthemain∞ntentsand刪ev唧ents吼shOwnasfbUo嘯s：1Itisres∞rchedthatthe譽舢e時刪any0fScbwemersingle—layerspherical咒ticlllat甜shells，thenthe∞rresp∞dingm跏isw‘rkcd∞t粕dthe卸tom撕cbllildingmodelofsin垂elaycrreticulatcd

3、shellsis他alized211”丘∞vibrationdlamcteristicofs‘IhWcdl盯sin酉elay盯印hericm∞ticul砷cdshdlsis柚a1)，zcdtakingintoaocounttheinnuenceofm缸yldndsOffac啪鯽ch笛thcsp姐，ther砒i0ofri辯t0span，thcr00f10ads，theclo輻一secCionalare勰ofmem慨，the∞ndition

4、of蛐p叫sand∞衄，血印the丘rst缸qu％cypracticalitydeSigningchanisdfawn3皿edyn鋤ic鼬ilityofSdlwcdlcrsin謄c—lay盯sphcricalfeticIlla刪shcllsund口thesimplcloadsis越alyzed，wh髓investigatingthcs協(xié)bil姆ofthesheUsund盯stcp10ads，theinitialg∞me啊cimpcrfc

5、ctiOn鋤dthes蚋lctllIaldampingarctakenintoao∞um11ledyn鋤icstabilityofshells蚰derm粗gIll盯10adsis鋤alyzcdtald：ngint0aoco岫ttheinnuenccofthedi丘b∞mdImItionH缸m伽曲∞spon∞∞theshcllsis鋤【alyzcdtodctcrminethe∞s咖t丘equ％c)，oftheshelk’缸dthed“Ia

6、micstabiliti鶴oftheres∞anccrc舀∞柚doffres∞柚∞∞gi∞ofshclls蛐d盯h缸mo玎記loadsa∞amlyzcdfespcctively4Thedyn鋤icstabintyofs‘：hwem盯sin西clayerspherical∞ticul鋤cdshells叩d盯the∞ismicloadsis柚alyzed’the白c衄s，whicha儂斌meresp∞sebchaviors’such鴰the

7、inputdiIne璐io璐Ofthe∞ismiclOadsthematcrial塒Dnlincarity，thcs蟣lcturaldamping，theinitial卿刪cimpcrf如ti∞，thccross。∞di∞ala托弱ofmem_be娼，thentiosofri∞tosp衄，thcr∞fl∞ds，the∞nditi∞ofsupp0毗s柚d恤diII白如teanhqua】【ewav囂，amtakeninloacoo吼t111