NOGRID pointsStress - Container Stress Simulation Software

NOGRID pointsStress simulation software was developed specifically for the container glass industry and helps engineers analyze their container designs in terms of strength and durability. Different design variants can be compared without time-consuming physical tests. In combination with NOGRID pointsBlow, which provides reliable thickness distributions, design optimization has never been easier or more trustworthy. Even in the early stages of the design process, a newly created container can be tested as well.

Overview NOGRID pointsStress

Container Stress Simulation Software
Import non-round or round geometries as STEP file or directly from NOGRID pointsBlow
Geometry can be full 3-D, clipped 3-D or 2-D rotationally symmetric
Choose between 5 common stress test cases
Visualize results as 3-D, cross-section or line chart
Overlay stress limits along the height

5 Different Stress Test Cases

Build on the proven strength of the NOGRID solver, the numerical framework with its additional elastic components delivers robust and reliable results for the stress tests shown in Figure 1:

Internal Pressure
Head Load
Pendulum Impact
Drop Collision
Filling Line Collision

For each stress test NOGRID pointsStress has prepared the setup, so that a minimum of user input is sufficient to get reliable results. For example, the head load stress test only requires the value of the force acting on the head. The surfaces where the force is applied or the surface where the bottle touches the bottom is found automatically.

Schematic steps Blow and Blow process container forming

Figure 1: Stress Cases

Easy Geometry Import

The container geometry is produced at the end of a NOGRID pointsBlow simulation. where a surface mesh of the result is written automatically. In addition, a geometry of a container with the desired thickness distribution created in a CAD (Computer-Aided Design) system can be imported. The chosen file format is the well-supported STEP format, which will be meshed after the import. With that ability, stress simulations can take place in early stages of the design process reducing development time. Additional NOGRID's CAD program compass will be added. In Figure 2, an external CAD program creates the container geometry and compass is used to name and group the faces.

Figure 2: Geometry import from CAD (top) or NOGRID pointsBlow (bottom)

All Geometry Dimensions

For a seamless workflow, all geometry types produced by NOGRID pointsBlow can be processed. These include 2-D (axis-symmetric), 3-D part (cut 3-D model), and full 3-D geometries. Figure 3 shows the results for each geometry type. Since the container in Figure 3 is rotationally symmetric, the results are identical.

By including all types, there is no limit in container design for the stress computation and computational ressources can be used efficiently.

Non-symmetric and symmetric container forming simulation in NOGRID pointsBlow software

Figure 3: Results 3-D, 3-D-clip and 2-D (axis-symmetric)

Visualization Possibilities

NOGRID pointsStress offers different visualization and reporting features. A full 3-D window, a 2-D cross-section window and a line chart window are available and highly adjustable. The line chart plots the container’s inner and outer values along the height. For full 3-D and 3-D part geometries, the cross section can be visualized at a specified angle. This feature is valuable especially for non-round container. Figure 4 shows some of the visualization possibilities. The grey are in the left 3-D window shows the surface on which the cross-section is created. The cross-section in the middle is zoomed to the shoulder. For the line chart on the right, an external limit file has been loaded and the local stress limits are shown as red straight lines.

Figure 4: Visualization possibilities

Nogrid's strengths

Particular strengths of NOGRID's fluid flow CFD software are the rapid preprocessing (no fluid grid needs to be generated, only the boundary mesh, inner finite points are generated automatically depending on User setting initially and during computation), and the outstandingly short computation time even for complicated cavities.

As you can see in the image below, the boundary of the geometry still requires a mesh to allow the interior finite points to detect the boundary. The boundary must therefore be meshed and the finite points inside are automatically generated during the simulation controlled by User specifications.

Easy and fast modelling: Build geometry, mesh boundary, setup the case and start computation

What is CFD from NOGRID?

CFD solves the fundamental equations that define the fluid flow process. With CFD software from NOGRID every engineer makes better decisions by predicting, analyzing and controlling fluid flow, heat and mass transfer or chemical reaction. By using NOGRID software for flow modeling you receive information on essential flow characteristics as for example flow distribution. Using it additional to testing and experimentation NOGRID software helps to improve the evaluation of your design – resulting in better construction and operation parameters, increasing planning security and money savings due to faster time to the marketplace for your product or process.

Choose NOGRID

With NOGRID, you choose professional CFD software and services – our aim is helping you to be successful. When you decide to work with NOGRID you choose close cooperation with a dynamic, flat hierarchies-organization. Short information channels result in quick and accurate professional support and service. Our team consists of highly qualified employees, who are experts in fields such as numerical simulation or computational fluid dynamics. Based on our know-how, we are pleased to offer the following services, responding to your individual requirements:

TRAINING

In our two-days training courses you will learn, how to use NOGRID CFD software efficiently. Our technical support team will teach you how to handle and solve different cases.

For more details please refer to Training Courses →

Technical Support

We offer full professional support from the minute you start using our software, by telephone or by email. Contact us, when ever needed.

For more details please refer to Software Support →

Service

Lack of time or resources and other constraints often make outsourcing an attractive solution. We help you with your flow modeling needs. Based on our engineering expertise in this field we offer individual numerical simulation services matching the unique needs of your organization.

For more details please refer to Simulation Services →