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Wybrane problemy wytrzymałości i stateczności poziomych walcowych zbiorników ciśnieniowych

Magnucki K.

Dozór Techniczny

2010

z. 1-2

4--10

Przedmiotem artykułu są poziome walcowe zbiorniki ciśnieniowe. Wybrano na podstawie literatury pewne podstawowe problemy wytrzymałości i stateczności tych konstrukcji. Wyróżniono w opisach części walcowe zbiorników – powłoki walcowe, dna wypukłe oraz połączenia kołnierzowe śrubowe króćców. Wyniki badań numerycznych zestawiono na rysunkach.

Modelling of Relations Between Liquid and Tank Truck's Constructions in Dynamic Conditions Using FEM

Osiński J., Sowiński D.

Machine Dynamics Problems

2007

Vol. 31, No. 4

80-98

Tank trucks are the particular group of vehicle to transport fuel and other dangerous materials. Because of their specific role on the roads they have to be safe, reliable and economic. Designing these type of construction one concentrates on the economic factors. In consequence these type of constructions tends to minimize its masses and maximise load-carrying ability. To gain these goals most of modern tank trucks have self-load-carrying ability construction. To design proper construction of cistern the mechanics of deformable structures, membrane theory, stability and optimisation have to be known. The complexity of the matters has been taking into consideration in many references so far. One of the publication worth to look through is "Strength end optimisation of sheet metal tanks" (Magnucki, 1998). It is only polish version. The author assumes the science achievements in this field until 1998. The examples enhanced in the book show the scale of complication of this subject. Strict mathematic solution could be used only for really simplified cases of tanks. The article describes the new method of modelling influences of liquid on tank truck's elements in dynamic condition with FEM. The method makes allowance for modelling viscosity and compressibility of liquid and filling the chambers up to different levels. Most of the cisterns for fuel are designed to transport a few types of liquid (fuel, oil etc.). To enable the modelling of this kind of situation every chambers could be filled by different liquid's models. The results of investigations could develop up-to-date method of cistern's analysing. It'll be change into dynamic direction. It is a subject of doctor' thesis which has been written in Institute of Machine Design Fundamentals (Warsaw University of Technology). The hyperelastic material has been used to define properties of liquid. The models of tanks are modelled as typical shell construction (shell elements 3 or 4 nodes). The liquid's volume was modelled as 8 or 6 nodes solid elements with properties of hyperelastic material.