"Shape and Bending Resistance" Shape and Structure PPT Courseware 2

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"Shape and Bending Resistance" Shape and Structure PPT Courseware 2

What factors are related to the bending resistance of beams?

beam material,

The length of the beam,

The width of the beam,

The thickness of the beam.

1. The material’s bending resistance ( ).

A. Only related to material thickness B. Only related to material width

C. It is related to both the width and thickness of the material.

2. The thickness and width of the material ( ) affect the ability to resist bending.

A. Same degree B. More thickness C. More width

We found: What is the relationship between the width of the paper beam and its bending resistance?

As the width of the paper beam increases, the bending resistance will also increase

What is the relationship between the thickness of the paper beam and its bending resistance?

As the thickness of the paper beam increases, the bending resistance will be greatly increased.

Increasing the thickness of the beam can improve the bending resistance of the beam more effectively than increasing the width of the beam.

Should the beam be placed flat or upright?

The beams are placed upright, because the thickness is increased when placed upright, and the bending resistance of the bridge is greatly enhanced.

Experimental question: Study the thickness and bending resistance of paper

1. What quantities should be kept constant during the experiment?

The material of the paper, the width of the paper, the length of the paper, the weight of a single gasket, the position of the gasket, and the degree of bending

Different conditions: The thickness of the paper beams is different.

What is the relationship between the shape of a paper beam and its ability to resist bending?

Experiment: Fold paper into different shapes and test their ability to resist bending.

Think: What conditions cannot be changed?

When experimenting, we should pay attention to:

1. Only the shape of the paper can be changed, the distance and height of the piers cannot be changed, and the thickness, length and size of the paper cannot be changed.

2. Each piece of paper can only be used once and cannot be used repeatedly or together.

3. The gasket should be placed as far as possible in the middle of the paper bridge and placed gently.

4. The pad that makes the paper touch the table cannot be recorded.

judge:

1. Increasing the thickness can increase the bending resistance of the material, which is a good way. ( )

2. Changing the shape of the material can change its ability to resist bending. ( )

3. The same kind of paper with the same size, made into different shapes, has different bending resistance. ( )

4. The rail used for train tracks is a kind of "I"-shaped steel with a slightly changed shape. ( )

5. There is no other reason why the bending resistance of corrugated cardboard is related to the thickness of the paper. ( )

6. To improve the bending resistance of the material, you can increase the thickness of the material or change the material. ( )

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"Shape and Bending Resistance" Shape and Structure PPT Download:

"Shape and Bending Resistance" Shape and Structure PPT Download Part One: Introduction of New Lessons Through the study of the previous lesson, we know that increasing the thickness of an object can significantly enhance the bending resistance of the material, but this requires increasing the amount of material. What can students do for...

"Shape and Bending Resistance" Shape and Structure PPT:

"Shape and Bending Resistance" Shape and Structure PPT Part One Content: Learning New Lessons Discussion: How much weight can a flat paper beam bear? How much weight can paper beams made of the same paper folded into different shapes bear? Why changing the shape can improve the bending resistance of materials...

"Shape and Bending Resistance" Shape and Structure PPT Courseware 4:

"Shape and Bending Resistance" Shape and Structure PPT Courseware 4 What is the relationship between the bending resistance of a beam and its width and thickness? The wider the beam, the greater its resistance to bending. The thicker the beam, the more resistant it is to bending. Thinking: 1. Why are some steel or aluminum materials made of TUL...

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Update Time: 2024-10-21

This template belongs to science courseware Science Edition for Sixth Grade Science Volume 1 industry PPT template

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