Industrial Filter Device, Germany

Structures Analyzed with Dlubal Software

  • Customer Project

Customer Project

The project for designing a filter/dryer device, including agitator, required a complete stress and deformation analysis in RFEM. The complex modeling of the structure, which had 1,424 surfaces, 158 solids, and 425 members, represented a special design challenge.

Structural Engineering Peter & Partner
Engineering and Expert Company for Structural Mechanics, Much
www.ifs-peter-partner.com

Model

Model Input

The filter was modeled with a linear elastic shell and solid elements. It consists of the following main structural components:

  • Floor slab
  • Filter bottom
  • Container wall with torispherical head and ring flange applied at bottom
  • Brackets on container wall
  • Support plate for agitator
  • Pipe connection and lifting eyes on torispherical head
  • Circulating serpentine pipes

The connection of the container and floor slab was especially interesting for the modeling process. The ring flange was applied in the form of a solid element to the bottom of the tank plate. It was fixed to the floor slab with 53 clamping bolts (M 27).

They were uniformly distributed around the circumference to ensure a constant prestressing force. In order to anchor the ring flange against the floor slab with defined prestress forces, a circulating counter element was modeled as a solid element on the tank wall. Thus, it was possible to clamp the container flange against the conical floor slab.

To reproduce this conical fastening in RFEM, it was necessary to define the contact property between these structural components in the analysis model. Contact solid elements defining an elastic spring were distributed uniformly around the circumference.

Loading

The following loads were applied to the structure:

  • Design pressure for container -0.01 psi, heating for flat bottom -0.006 psi, heating coil -0.006 psi
  • Vertical loads due to self-weight and equipment
  • Design temperature -4/392°F
  • Internal positive and negative pressure with design of pressure fluctuations from 0.0 to 43.5 psi for 28,000 cycles of load according to AD‑S1 and S2
  • Agitator loads for 2 million Stress cycles

Calculation in RFEM

Five load groups were created from the single load cases and the FE mesh was generated. Then the internal forces, stresses, and deformations were determined in RFEM.

In addition to the general stress analysis, fatigue designs due to pressure fluctuations and agitator loading were performed.

Write Comment...

Write Comment...

  • Views 2983x
  • Updated 09/12/2022

Contact Us

Contact Dlubal

Do you have further questions or need advice? Contact us via phone, email, chat, or forum, or search the FAQ page, available 24/7.

(267) 702-2815

[email protected]

Revit, IFC, and DXF Integration in RFEM 6 (USA)

Revit, IFC, and DXF Integration in RFEM 6 (USA)

Webinar 12/15/2022 2:00 PM - 3:00 PM EDT

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 03/02/2023 9:00 AM - 1:00 PM CET

Event Invitation

International Mass Timber Conference

Conference 03/27/2023 - 03/29/2023

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 11/17/2022 9:00 AM - 1:00 PM CET

Construction Stages Analysis \n in RFEM 6

Construction Stages Analysis in RFEM 6 (USA)

Webinar 10/19/2022 2:00 PM - 3:00 PM EDT

Considering Construction Stages \n in RFEM 6

Considering Construction Stages in RFEM 6

Webinar 09/08/2022 2:00 PM - 3:00 PM CEST

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 09/08/2022 9:00 AM - 1:00 PM CEST

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 04/27/2022 8:30 AM - 12:30 PM CEST

Analysis of Steel Joints Using FE Model in RFEM 6

Analysis of Steel Joints Using FE Model in RFEM 6

Webinar 02/24/2022 2:00 PM - 3:00 PM CET

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 02/10/2022 8:30 AM - 12:30 PM CET

Considering Construction Stages \n in RFEM 6

Considering Construction Stages in RFEM 6

Webinar 01/13/2022 2:00 PM - 3:00 PM CET

AISC 360-16 Steel Design in RFEM 6

AISC 360-16 Steel Design in RFEM 6

Webinar 12/14/2021 2:00 PM - 3:00 PM EDT

Online Training | English

Eurocode 3 | Steel Structures According to DIN EN 1993-1-1

Online Training 12/09/2021 8:30 AM - 12:30 PM CET

Introduction to New RFEM 6

Introduction to the New RFEM 6

Webinar 11/11/2021 2:00 PM - 3:00 PM EDT

RFEM 5
RFEM

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids, and contact elements

Price of First License
3,950.00 EUR