viscoelastic cylinder
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2022 ◽  
Vol 81 ◽  
pp. 103116
Author(s):  
Mohammadali Nasrabadi ◽  
Andrei Vladimirovich Sevbitov ◽  
Vahid Arab Maleki ◽  
Narges Akbar ◽  
Ilghar Javanshir

2020 ◽  
Vol 231 (6) ◽  
pp. 2217-2230 ◽  
Author(s):  
Alexandra A. Zobova ◽  
Irina G. Goryacheva

2019 ◽  
Vol 80 (12) ◽  
pp. 341-345
Author(s):  
Ismoil Ibragimovich Safarov ◽  
◽  
Мuxsin Khudoyberdiyevich Тeshaev ◽  
Zafar Ixtiyorovich Boltaev ◽  
Nurillo Raximovich Kulmuratov ◽  
...  

Author(s):  
I. K. Senchenkov ◽  
O. P. Chervinko

Solid propellant rocket motor is considered as hollow viscoelastic cylinder inserted in multilayered elastic shell-like case. The material of propellant is considered to be compressible. An estimation of maximum unsteady stresses on cylinder-shell boundary and shell under growing pressure on interior or external cylindrical surface were calculated by FEM. Four corner isoparametric finite element is utilized. Numark method to integrate by time the dynamic equations is used. The problem of linear viscoelasticity have been employing of the Schapery method. `In the case of internal pressure, the possibility of tensile radial stresses on the contact surface of the propellant-shell during the transition process has been established. The dependence of the maximum contact stresses as well as circumferential stresses in the shell on the shell thickness is established. In the case of external pressure pulse, the presence of significant tensile radial stresses on the propellant-shell interface is shown. Insignificant tensile circumferential stresses in the transient wave process are possible in the shell.


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