"Shape and Bending Resistance" Shape and Structure PPT

Description

"Shape and Bending Resistance" Shape and Structure PPT

Part One Content: Learning a New Lesson

discuss:

How much weight can a flat paper beam hold?

How much weight can paper beams made of the same paper folded into different shapes bear?

Why does changing the shape improve a material's resistance to bending?

Summary: Changing the shape of a material can change its ability to resist bending.

Why does changing the shape of a material improve its ability to resist bending?

Bending thin materials into shapes such as "V", "L", "U", "T" or "I" reduces the width of the material, but increases the thickness of the material. Increasing the thickness can greatly enhance the bending resistance of the material. ability.

Why does the structure of corrugated cardboard make soft paper hard?

Because the corrugated cardboard bends the paper and then glues it, changing the shape of the paper, the thickness is increased, thereby increasing the bending resistance of the corrugated cardboard.

Shape and bending resistance PPT, part 2: expansion and extension

The invention of corrugated paper

As early as 150 years ago, the British brothers Edward Healy and Edward Allen invented pressurizing paper into corrugated corrugated paper; in 1958, the British had the first patent for manufacturing corrugated paper. It was not until the end of the 19th century that Americans began to study the use of corrugated paper to make packaging and shipping boxes.

Shape and bending resistance PPT, part three: summary of this lesson

Although changing the shape of the material reduces the width of the material, it can increase the thickness of the material, so it can not only enhance the bending resistance but also save material.

Shape and bending resistance PPT, Part 4: Classroom exercises

1. Fill in the blanks

1. Corrugated cardboard has better bending resistance than ordinary paper ( ).

2. Change the shape, both ( ) and ( ).

3. In the design experiment where changing the shape of the paper can enhance the bending resistance, the conditions for the change are ( ).

2. Judgment

1. Increasing the width can enhance the bending resistance more than increasing the thickness. ( )

2. All corrugated paper is composed of three parts. ( )

3. Although the shapes are different, the bending resistance is the same. ( )

Shape and bending resistance PPT, Part 5: Homework

After class, continue to complete experiments on shape and bending resistance.

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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 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...

"Shape and Bending Resistance" Shape and Structure PPT Courseware 3:

"Shape and Bending Resistance" Shape and Structure PPT Courseware 3 Do you still remember? What does bending resistance depend on: 1. Thickness of material 2. Width of material 3. Type of material Can you guess? Assuming that the thickness, width, and type of the material remain unchanged, then the material...

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Update Time: 2024-09-30

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

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