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"ABSTRAKKarakteristik dinamik struktur yang berupa periode getar dan pola ragam getarsuatu struktur eksisting dapat diperoleh melalui pengolahan data monitoringvibrasi struktur tersebut.Pada penelitian ini, monitoring vibrasi dilakukan dengan menggunakan 5 buahtriaxial accelerometer yang diletakkan dengan beberapa pola pada lantaijembatan. Dengan menggunakan Transformasi Fourier didapat respons strukturdalam domain frekuensi. Dari respons spektrum ini kemudian didapat periodegetar dan pola ragam getar alami struktur. Hasil pengujian ini kemudiandibandingkan dengan hasil analisa dari pemodelan struktur yang dilakukandengan program MIDAS.Dari penelitian ini berhasil dilakukan modal extraction terhadap lima modepertama jembatan. Periode getar hasil eksperimen menunjukkan hasil yang identikdengan hasil pemodelan dimana rata-rata error adalah sebebsar 12.364%. Polaragam getar yang diperoleh dari hasil eksperimen cukup identik pula dengan hasilpemodelan. Dengan menggunakan metode Half Power Bandwidth didapat pularedaman struktur yang berkisar antara 1.757 – 5.13%.

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ABSTRACTDynamic characteristics of structure which consist of natural period of vibrationand mode shape of an existing structure can be obtained from analysis of vibrationmonitoring data of the structure.In this research, an experimental vibration monitoring field investigation ispresented. The experimental procedure involves instrumenting 5 triaxialaccelerometer that located on bridge deck in a few layout arrangements. Byimplementing Fourier Transform structure response in frequency domain isobtained. From this response spectrum natural period of vibration and mode shapeof structure can be extracted. Finite element model of the bridge using MIDASsoftware is validated against experimental results.Result shows that from experimental, modal extraction of 5 first mode of thebridge has been accomplished. Natural period based on experimental result showsidentical result compared to the modelling results with average error of 12.364%.Mode shape based on experimental result and modelling result are also identical.By implementing Half Power Bandwidth method damping ratio of bridge isranging from 1.757% to 5.13%."

"This monograph covers all important issues of terminal ballistics in a comprehensive way combining experimental data, numerical simulations and analytical modeling. It uses a unique approach to numerical simulations as sensitivity measure for the major physical parameters.In the first chapter, the book includes necessary details about the experimental equipment which are used for ballistic tests. The second chapter covers essential features of the codes which are used in recent years all over the world, the Euler vs. Lagrange schemes, meshing techniques etc. The third chapter, devoted to the penetration mechanics of rigid rods, brings the update of modeling in this field. The fourth chapter deals with plate perforation and the fifth chapter deals with the penetration of shaped charge jets and eroding long rods. The last chapter includes several techniques for the disruption and defeating of the main threats in armor design. Throughout the book the authors demonstrate the advantages of the simulation approach in understanding the basis physics behind the investigated phenomena."

"This book, is primarily concerned with the fundamental theory of detonation physics in gaseous and condensed phase reactive media. The detonation process involves complex chemical reaction and fluid dynamics, accompanied by intricate effects of heat, light, electricity and magnetism - a contemporary research field that has found wide applications in propulsion and power, hazard prevention as well as military engineering."