Modern K/M OBÜS kulesinde zırh kalınlığının bilgisayar destekli optimizasyonu
Computer aided optimization of armor plate thickness in turret of modern self propelled howitzer
- Tez No: 129151
- Danışmanlar: DOÇ. DR. VAHDET UÇAR
- Tez Türü: Doktora
- Konular: Makine Mühendisliği, Mechanical Engineering
- Anahtar Kelimeler: Obüs tasarımı, optimizasyon, CAD, CAE
- Yıl: 2002
- Dil: Türkçe
- Üniversite: Sakarya Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Makine Mühendisliği Ana Bilim Dalı
- Bilim Dalı: Makine Tasarım ve İmalat Bilim Dalı
- Sayfa Sayısı: 187
Özet
ÖZET
Özet (Çeviri)
SUMMARY Keywords. Howitzer design, optimization, CAD, CAE, ballistic penetration. Thesis study was started and continued internally to development program of Modern Self Propelled Howitzer (SPH) which has been started by Army in August 1999. In thesis study whose name is“Computer Aided Optimization of Armor Plate Thickness in Turret of Modern Self Propelled Howitzer”, stresses and displacements which were occured during firing ivestigated in the turret of SPH by CAE (Computer Aided Engineering) method. At the end of the analyses, it was obtained a lot of datas and these was applicated in optimization of armor plate thicknesses were created the turret. The experimental datas that is relevant the study obtained from armor material tensile tests which was made by Army, from manufacturer firm of armor material: Ssab Oxelosund and from manufacturer firm of SPH: Samsung Aerospace Inc. Goal of this study, to develop Modern SPH's power/weight ratio but not to weak durability meanwhile and in addition, to use effectively an integrated engineering solution like computer aided design (CAD), engineering and optimization. For optimization study, turret CAD model that was prepared for static analyses converted to parametric model. Armor plates were defined as parameters of the model. The goal of optimization is stress minimization. To develop the survey, sensitivity study was made on the turret with stress measure. This step of the study, Pro/Engineer CAD/CAM and Pro/MECHANICA CAE softwares were used. A different characteristic side of this study is using integrated CAD/CAE programs in 3D( three dimensional) sophisticated structures which were occured large deformations. At the end of the optimization, the values of armor plate thicknesses was examined and compared with ballistic penetration numerical analyses in turret. Researches on this subjects has been indicated that turrets are the components the most hitted by projectiles of armored warfare vehicles. In penetration analyses, FEA ( Finite Elements Analysis) method was applicated and ANSYS/LS-DYNA explicit dynamic analysis software was used to solve the problem. The experimental datas made by FNSS for Army was compared with numerical analyses results. For armor material Armox 500 which was mentioned the study is a new working. The values obtained from optimization can not be thinner than the value that was accepted in ballistic penetration analyses. Because, the ballistic protection is the most important criteria always. The study can be defined as computer aided design and optimization of plate thickness which is made an 3D sophisticated shell model. The experiments that were obtained in the result of the study was presented as color contour distribution and curves; the optimization results was presented numerically. It has been thinking the study will reference the researchers works on this subject. xvi
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