381x

2023-11-01

Cloud Calculation - SSL Handshake Failed

When trying to start a cloud calculation, I get the error message SSL handshake failed. What should I do?

Answer:

If this error message appears, RFEM/RSTAB cannot connect to the server managing the cloud calculations.

Please ask your IT department to check the communication with our server. It is necessary to enable the following access in the firewall policies as well as in the network:

Server name: cloud.dlubal.com
Server IP: 89.187.130.211
Server Port: 443

If the connection still does not work after this procedure, your IT department needs to check whether the SSL certificate has been exchanged, based on your internal guidelines (for example, using a proxy). They should be able to check this with software (for example, OpenSSL) in the command line:

cd C:\Program Files\OpenSSL-Win64\bin
openssl.exe s_client -connect cloud.dlubal.com:443

Author

Mr. Faulstich is responsible for the quality assurance of the RFEM program and provides customer support.

Do you have any questions?

Events

2024-04-30

Online Training

RFEM 6 | Students | Introduction to Timber Design

2024-05-02

Construction Stages in Membrane Structures with RFEM 6

Webinar

Construction Stages in Membrane Structures with RFEM 6

2024-05-08

Online Training

RFEM 6 | Students | Introduction to Reinforced Concrete Design

2024-05-08

$Cross-Section Modeling and \n Stress Analysis in RSECTION 1$

Webinar

Cross-Section Modeling and Stress Analysis in RSECTION 1

2024-05-15

Online Training

RFEM 6 | Students | Introduction to Steel Design

2024-05-16

Consideration of Construction Stages in RFEM 6

Webinar

Consideration of Construction Stages in RFEM 6

2024-05-23

Most Frequently Asked Questions Answered by Dlubal Support Team

Webinar

Most Frequently Asked Questions Answered by Dlubal Support Team | May 2024

2024-05-29

$Steel Structures in RFEM 6 \n Part 1: Modeling, Load Input$

Webinar

Modeling and Design of Steel Structures in RFEM 6 | Part 1: Modeling, Load Input

2024-06-06

$Steel Structures in RFEM 6 \n Part 2: Combinations, Design, Documentation$

Webinar

Modeling and Design of Steel Structures in RFEM 6 | Part 2: Combinations, Design, Documentation

2024-06-20

Webinar

Most Frequently Asked Questions Answered by Dlubal Support Team | June 2024

2024-10-16

Online Training

RFEM 6 | Students | Introduction to Member Design

2024-10-23

Online Training

RSECTION 1 | Students | Introduction to Strength of Materials

Videos

FAQ 005494 | How can I model a timber beam with stiffening on both sides? (splice)

FAQ

FAQ 005494 | How can I model a timber beam with stiffening on both sides? (splice)

Length: 00:01:22 min

WIN | 04/2024 – What's New in RFEM 6 and RSTAB 9?

General

WIN | 04/2024 – What's New in RFEM 6 and RSTAB 9?

Length: 00:02:00 min

Most Frequently Asked Questions Answered by Dlubal Support Team | April 2024

Event

Webinar | Most Frequently Asked Questions Answered by Dlubal Support Team | April 2024

Length: 00:00:00 min

Event

RFEM 6 | Students | Introduction to Member Design

Length: 00:00:00 min

FAQ

FAQ 005477 | The calculation in RFEM 6 takes a very long time, but the processor utilization of my…

Length: 00:00:15 min

Product Feature

Mia – Your AI Assistant for Structural Analysis and Dlubal Software

Length: 00:01:26 min

Event

Webinar | Linear Stability Analysis in RFEM 6 and RSTAB 9

Length: 01:40:19 min

Event

Webinar | Advanced Structural Analysis with RFEM 6 Python API

Length: 00:51:43 min

WIN | 03/2024 – What's New in RFEM 6 and RSTAB 9?

General

WIN | 03/2024 – What's New in RFEM 6 and RSTAB 9?

Length: 00:01:52 min

Playlist

Models to Download

Single-Span Beam for Fiber-Reinforced Concrete Design

403x

21x

Single-Span Beam with Fiber-Reinforced Concrete as Surface Component or Frame Structure

FAQ 005401 | How do I use the "Import Support Reaction" load wizard?

366x

21x

Foundation Slab

363x

20x

Concrete Building

421x

14x

Precamber

373x

Tilting Cube

838x

24x

Girder Grillage

Model 004061 | Flat Roof Hall Made of Steel

1510x

65x

Flat Roof Hall Made of Steel

1250x

52x

Flat Roof Hall Made of Steel

997x

113x

Analysis of Steel Structures in RFEM 6 | Steel Hall

Knowledge Base Articles

KB 001880 | Design of Cable Structures in RFEM 6 and RSTAB 9

In this article, you will learn how to model and design cable structures in RFEM 6 or RSTAB 9.

KB 001879 | Influence of Bending Stiffness of Cables

This article describes and explains the influence of bending stiffness of cables on their internal forces. Furthermore, the text provides information on how this influence can be reduced.

To evaluate whether it is also necessary to consider the second-order analysis in a dynamic calculation, the sensitivity coefficient of interstory drift θ is provided in EN 1998‑1, Sections 2.2.2 and 4.4.2.2. It can be calculated and analyzed using RFEM 6 and RSTAB 9.
The coefficient θ is calculated as follows:$$\mathrm\theta\;=\;\frac{\displaystyle{\mathrm P}_\mathrm{tot}\;\cdot\;{\mathrm d}_\mathrm r}{{\mathrm V}_\mathrm{tot}\;\cdot\;\mathrm h}\;$$

Reduction of Building to Cantilever Structure The individual mass points represent stories. The deflection due to the normal compression forces shown in (a) is (b) converted into equivalent moments of displacement or shear forces (KB1867)

For the ultimate limit state design, EN 1998‑1, Sections 2.2.2 and 4.4.2.2 require a calculation considering the second‑order theory (P‑Δ effect). This effect may be neglected only if the interstory drift sensitivity coefficient θ is less than 0.1.

Product Features

Feature 002807 | 3D Display of FSM Results

In the "Edit Section" dialog box, you can display the buckling shapes of the Finite Strip Method (FSM) as a 3D graphic.

In RFEM 6 and RSTAB 9, you have the option to enter "Visual Objects" as guide objects. You can import the file formats 3ds, stl, and obj.

These objects allow you to create a better reference to the dimensions.

Feature 002793 | Mia, AI Assistant in RFEM

Mia is accessible in the programs and prevents the hassle of following up by email or phone.

Using the "Damper" member type, you can define a damping coefficient, a spring constant, and a mass. This member type extends the possibilities within the Time History Analysis.

With regard to viscoelasticity, the "Damper" member type is similar to the Kelvin-Voigt model, which consists of the damping element and an elastic spring (both connected in parallel).

Frequently Asked Questions (FAQ)

Which Dlubal software products do you recommend for the structural analysis and design of timber structures in particular?

How do I reset the display settings to default?

Why are the maximum deformations not displayed?

How many updates does Dlubal provide for RFEM 6 / RSTAB 9 each month?

Where in RFEM 6 can I find the calculation parameters?

How can I model a timber beam with stiffening on both sides? (splice)

Customer Projects