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Attraction "Chain carousel"

Strength calculation, stiffness assessment, stability calculation of the “Chain carousel” attraction design, intended for entertaining children over 14 years old and adults, are performed

Design calculations are made in accordance with the requirements of GOST R 52170-2003 “Safety of mechanized rides. The main provisions for the design of steel structures. Updated edition.

The calculations were performed using the APM Structure 3D module, which is part of APM Civil Engineering.

The attraction is a setup that provides a general rotational movement of the seats, as well as raising and lowering the seats. Attraction - baseless.

 
Attraction "Chain carousel"
 
Finite element attraction model in APM Civil Engineering

The attraction is a setup that provides a general rotational movement of the seats, as well as raising and lowering the seats. Attraction - baseless.

In accordance with the requirements of GOST R 52170-2003 “Safety of mechanized rides. The main provisions for the design of steel structures. Updated edition "strength calculations, stiffness and stability are performed for the most unfavorable combinations of load cases.

Calculation of the static strength of the structure of the attraction

In accordance with the results obtained, the static strength of the attraction elements is considered to be provided in accordance with the requirements of GOST R 52170-2003 “Safety of mechanized rides. The main provisions for the design of steel structures. Updated edition.

Calculation on the stability of the form structures of the attraction

In accordance with the requirements of GOST R 52170-2003 “Safety of mechanized rides. The main provisions for the design of steel structures. Updated edition of the design of rides need to rely on the stability of the form.

The presented calculation results in the APM Civil Engineering program show that the stability of the form of the structures of the “Chain carousel” attraction is provided with the required value of the safety factor in accordance with the regulatory documentation.

 
The results of the calculation of equivalent stresses in the elements of the attraction "Chain carousel" from the action of the design loads
 
The results of the calculation of the first form of loss of stability and safety factor

Calculation of the rigidity of the structure of the attraction

To assess the rigidity of the structure of the attraction in accordance with GOST R 52170-2003 “Safety of mechanized rides. The main provisions for the design of steel structures. Updated edition ”in APM Civil Engineering calculates vertical displacements (deflections), horizontal and total displacements for the most unfavorable combinations of load cases.

The analysis of the obtained results confirms the satisfaction of the designed structure of the attraction with the rigidity requirements in accordance with GOST R 52170-2003 “Safety of mechanized rides. The main provisions for the design of steel structures. Updated edition.

 
he results of the calculation of the vertical deflections in the boom of the attraction for the most unfavorable combinations of load cases
 
he results of the calculation of the vertical deflections in the rack attraction for the most unfavorable combinations of load cases

Calculation of the fatigue design attractions

Elements of the attraction perceive multiple moving loads from rotation. Therefore, fatigue damage occurs in the structural elements, and it is necessary to calculate for fatigue. Below are the results of the calculation of equivalent stresses in the structure of the attraction.

According to the results of the analysis, the fulfillment of the requirements for fatigue calculation for the design elements of the attraction in accordance with GOST R 52170-2003 “Safety of mechanized rides” was confirmed. The main provisions for the design of steel structures. Updated edition.

 
The results of the calculation of equivalent stresses in the structure of the attraction
 

The main conclusions on the results of the calculation of the design of the attraction

According to the results of strength calculation, stiffness assessment, and fatigue design of the “Chain carousel” attraction design in accordance with the requirements of GOST R 52170-2003, the following conclusions can be made in the APM Civil Engineering program:

The developed finite element model makes it possible to reliably describe the configuration of the attraction, geometric characteristics, loading conditions.

Analysis of the results of the strength analysis showed that for given loads, the results obtained do not exceed the maximum permissible values.

When analyzing the stability of the system, it is determined that the shape of the product is resistant to the actual loads.

Analysis of the calculation of fatigue showed that the maximum stresses in the structure do not exceed the calculated endurance limit.

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