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Register a new userDesign of the mid-Transverse Section in Shiphull
تصميم المقطع العرضي المتوسط في بدن السفينة
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طلال خازم( باحث )
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يعتبر المقطع العرضي المتوسط أحد المقاطع المميزة في بدن السفينة بوصفه المقطع الذي يقع في منتصف طوله الحسابي، حيث تبلغ عزوم الانحناء المؤثرة عليه قيمها العظمى، و بالتالي تتحدد متانة البدن بشكلٍ عام بمتانة هذا المقطع. تتضمن عملية تصميم المقطع العرضي المتوسط تحديد أبعاد الألواح و عوارض التدعيم المختلفة و هي تمثل إحدى المراحل الأساسية في عملية تصميم البدن. يتضمن البحث المقدّم تحديد القيم الحسابية لعزوم الانحناء و عزوم مقاومة و عطالة مساحة سطح هذا المقطع انطلاقاً من شروط تأمين المتانة الحدية ومتانة التعب. و يتضمن أيضاً العلاقات المستخدمة لتحديد أبعاد العناصر الطولية من خلال ما يسمى السماكات المحوًّلة و طريقة توزيع المعدن بينها و تقييم المتانة الطولية العامة للبدن بحسب الإجهادات العمودية و المماسية.
The mid-transverse section is considered one of the significant sections in the shiphull, because it exists in the middle of its calculated length, where the bindings moments reach the maximum, in consequence the hull strength can be determined through the strength of this section. Its design process includes the determination of the dimensions of plats and different framing beams and considered one of the important stages in the hull design process. This research includes the estimation of calculated values of binding moments, inertia and resistant’s moments of this section area, initiated from the providing conditions of critical strength and fatigue strength. It also includes, the formals used for the determination of longitudinal elements dimensions through the transverse thicknesses and metal distribution type among them. The longitudinal strength of the hull was evaluated according the perpendicular and tangential stresses.
References used
ШЛЕМОВ, Ф.С; МАСЯГИН, А.В. Строительная механика надводного корабля, Москва, 1956,621
ИПАТОВЦЕВ, Ю.Н; КОРОТКИН, Я.И. Строительная механика и прочность корабля, Ленингад, 1991,288
РОДОССКИЙ, В.А. Строительная механика надводного корабля, Ленингад, 1988,288
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