#  Assign Properties 

 



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In this page, we will show detailed procedures of assigning material properties for frame and airbags.

#### Create Material: frame

Firstly, we create a new material named 'Material-frame' for the frame. And set the following properties:

- General > Density:
    - Density = 1.2e-9 Mg/mm³
- Mechanical > Elasticity> Elastic:
    - Young’s Modulus = 100 MPa
    - Poisson’s ratio = 0.38

Sort ![property-plus-1](/sites/g/files/omnuum4601/files/2024-11/property-plus-1.png)

 



 ![property-plus-2](/sites/g/files/omnuum4601/files/2024-11/property-plus-2.png)

 







#### Create Material: airbag

For the property of airbags inside named ' Material-air bag', set:

- General > Density:
    - Density = 1.2e-9 Mg/mm³
- Mechanical > Elasticity> Elastic:
    - Young’s Modulus = 1000 MPa
    - Poisson’s ratio = 0.45

Sort ![property-3](/sites/g/files/omnuum4601/files/2024-11/property-3.png)

 



 ![property-4](/sites/g/files/omnuum4601/files/2024-11/property-4.png)

 







#### Create Sections

Double click on **Sections** in the model tree to create a new section. Set it to be a **homogeneous** **solid** and assign 'Material-frame' as its material.

Sort ![property-4](/sites/g/files/omnuum4601/files/2024-11/property-4_0.png)

 



 ![property-plus-4](/sites/g/files/omnuum4601/files/2024-11/property-plus-4.png)

 







Create another section and set it to be a **homogeneous** **shell** and assign 'Material-air bag' as the material. Set the shell thickness as 0.1.

Sort ![property-section-3](/sites/g/files/omnuum4601/files/2024-11/property-section-3.png)

 



 ![property-plus2](/sites/g/files/omnuum4601/files/2024-11/property-plus2.png)

 







#### Edit Section Assignment

Last, assign the section property to corresponding part by selecting the entire part geometry.

 ![property-section-5](/sites/g/files/omnuum4601/files/2024-11/property-section-5.png)

 

 ![property-plus-5](/sites/g/files/omnuum4601/files/2024-11/property-plus-5.png)

 

### Bibliography

Jiang et al. (2016) [Design and Simulation Analysis of a Soft Elastomer Manipulator based on Honeycomb Pneumatic Networks.](/publications/design-and-simulation-analysis-soft-manipulator-based-honeycomb-pneumatic)

Sun et al. (2016) [FLEXIBLE HONEYCOMB PNEUNETS ROBOTS.](/publications/flexible-honeycomb-pneunets-robot)

Jiang et al. (2017) [A Two-Level Approach for Solving the Inverse Kinematics of an Extensible Soft Arm Considering Viscoelastic Behavior.](/publications/two-level-approach-solving-inverse-kinematics-extensible-soft-arm)

Jiang et al. (2016) [Design and Simulation Analysis of a Soft Manipulator Based on Honeycomb Pneumatic Networks.](/publications/design-and-simulation-analysis-soft-manipulator-based-honeycomb-pneumatic)

Giri et al. (2010) [Continuum robots and underactuated grasping](https://softroboticstoolkit.com/publications/continuum-robots-and-underactuated-grasping)

Grissom, et al. (2006) [Design and experimental testing of the OctArm soft robot manipulator](/publications/design-and-experimental-testing-octarm-soft-robot-manipulator).

### Contributors

Hao Jiang

Zhanchi Wang

Xinghua Liu

Xiaotong Chen

Yusong Jin

Hao Sun

Xiaoping Chen