The task of the program ROHR2STOSS is the assessment of temporal varying load such as those induced by fluid hammer in pipe structures using the direct integration method of the differential equation. Linear as well as non-linear boundary conditions are considered.

For linear boundary conditions, this method is an alternative to the modal time history calculation of the ROHR2 standard calculation process. The possibility to include non-linear elements allows the design of new elements, which cannot be analyzed by modal time history calculation.

 

The real damping of structures only can be described approximately using a global damping coefficient in the wave equation. The choice of the damping coefficient, which is in general unknown, has an important influence on the results. Using more precise non-linear models for the frictional supports, shock absorbers and dampers ROHR2STOSS allows to perform detailed analysis of dynamic effects including local damping elements.
ROHR2STOSS is integrated into the ROHR2 environment. This makes it easy to switch between modal time-History analysis and Direct-Integration in Dynamic fluid Hammer load cases.
 

Inserting GERB visco dampers

ROHR2FUN

ROHR2STOSS includes the program ROHR2FUN.
ROHR2FUN is used for graphical representation and analysis of functions, esp. load inputs and results of ROHR2STOSS.