Contact means to touch physically or to communicate with.
Contact may also refer to one of the things below.
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Contact is a 1997 film about a scientist, after years of searching, finds conclusive radio proof of intelligent aliens, who send plans for a mysterious machine.
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From the Flamant Solution
and
If α = − π andβ = 0, we obtain the special case of a concentrated force acting on a half-plane. Then,
or,
Therefore,
The stresses are
The stress σrr is obviously the superposition of the stresses due to F1 and F2, applied separately to the half-plane.
The tensile force F2 produces the stress field
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The stress function is
Hence, the displacements from Michell's solution are
![\begin{align} 2\mu u_r & = \frac{F_2}{2\pi}\left[(\kappa-1)\theta\cos\theta + \sin\theta - (\kappa+1)\ln(r)\sin\theta\right] \ 2\mu u_{\theta} & = \frac{F_2}{2\pi}\left[-(\kappa-1)\theta\sin\theta - \cos\theta - (\kappa+1)\ln(r)\cos\theta\right] \end{align}](http://images-mediawiki-sites.thefullwiki.org/07/1/9/6/46713872160883503.png)
At θ = 0, (x1 > 0, x2 = 0),
![\begin{align} 2\mu u_r = 2\mu u_1 & = 0 \ 2\mu u_{\theta} = 2\mu u_2 & = \frac{F_2}{2\pi}\left[-1 - (\kappa+1)\ln(r)\right] \end{align}](http://images-mediawiki-sites.thefullwiki.org/03/3/0/4/25923953226531912.png)
At θ = − π, (x1 < 0, x2 = 0),
![\begin{align} 2\mu u_r = -2\mu u_1 & =\frac{F_2}{2\pi}(\kappa-1)\ 2\mu u_{\theta} = -2\mu u_2 & = \frac{F_2}{2\pi}\left[1 + (\kappa+1)\ln(r)\right] \end{align}](http://images-mediawiki-sites.thefullwiki.org/07/1/5/0/0240907280056532.png)
where
Since we expect the solution to be symmetric about x = 0, we superpose a rigid body displacement
The displacements are
where
and r = | x | on y = 0.
The tensile force F1 produces the stress field
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The displacements are
Superpose the two solutions. The stresses are
The displacements are
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At the point P
As 
,
u2 is unbounded.
However, if we are interested in regions far from A, we can apply the distributed
force as a statically equivalent concentrated force and get
displacements using the concentrated force solution.
The avoid the above issue, contact problems are often formulated in
terms of the { displacement gradient}
If the point P is inside A, then the integral is taken to be the sum of the integrals to the left and right of P.
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Displacement in x2 direction is
where C0 is a rigid body translation and C1x1 is a rigid body rotation.
Rigid body motions can be determined using a statically equivalent
set of forces and moments
The displacement gradient is
Integral is a { Cauchy Singular Integral} that appears often and very naturally when the problem is solved using complex variable methods.
Note that the only thing we are interested in is the distribution
of contact forces p(ξ).If we
change the variables so that x =
acosφ and ξ =
acosθ, then
If we write p(θ) and du0 / dφ as
and do some algebra, we get
In this case,
Also, d = 0 (origin at the center of A), hence p1 = 0. Therefore,
At 
,
the load is infinite, i.e. there is a singularity.
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.We have,
Hence,
and
Therefore,
and
Plug back into the expression for p(θ) to get
This expression is singular at θ = 0 and θ = π, unless we choose
Plugging a into the equation for p(θ),
If instead of the half-plane we have an cylinder; and instead of the rigid cylinder we have a deformable cylinder, then a similar approach can be used to obtain the contact length a
and the force distribution p
Many other problems are discussed in the texts by Timoshenko and
Goodier (Elasticity) and K.L. Johnson (Contact Mechanics,
1985).
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Contact | Table of Contents |
Walkthrough
| Contact | |
|---|---|
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| Developer(s) | Grasshopper Manufacture |
| Publisher(s) | |
| Release date(s) | |
| Genre(s) | RPG |
| System(s) | Nintendo DS |
| Players | 1 |
Contact/Table of Contents
| Contact | |
 |
|
| Developer(s) | Grasshopper Manufacture |
| Publisher(s) | Atlus |
| Designer(s) | Akira Ueda |
| Release date | November 19, 2006 (NA)
March 30, 2006 (JP) |
| Genre | Role-playing game |
| Mode(s) | Single player, Online |
| Age rating(s) | ESRB: E10+ |
| Platform(s) | Nintendo DS |
| Media | Game Card |
| Credits | Soundtrack | Codes | Walkthrough | |
Contact is an RPG designed by Akira Ueda, and developed by Grasshopper Manufacture, the team behind Killer 7. It breaks the fourth wall by including you, the player, as a character who is aiding the Professor, and the main character, Terry. The touch screen is used to manipulate decals & stickers which can give stat boosts, or perform specific tasks.
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The Professor and his Space Cat, Mochi, are in their space ship, being chased. They are shot down and lose all the power cells that are required for his ship. After landing on a strange planet, they meet Terry, a young boy who is a long way from home as a result of the Professor. Terry agrees to help the Professor, as they travel from island to island, solving quests in order to ultimately get all the power cells back.
There is a wide variety of gameplay to explain in Contact. Other than standard combat, Terry can also cook, fish, collect costumes, and much more.
The main combat is closer to real-time strategy games or MMORPGs than traditional RPGs. Players simply enter an "attack mode" and then move Terry near an enemy. Terry attacks automatically at a set rate of fire, but players can choose to use learned techs at any time, if they have the MP.
The game also features many statistics to level up, which are gained instantaneously. Every hit Terry takes increases your Defense EXP, every step increases his Jogging EXP, every meal he cooks increases his Cooking EXP, etc.
Players also have the unique ability to attack anyone in the game. There are enemies who attack you no matter what, but there are also helpless rabbits and sheep who are simply living out their lives, not expecting to be attacked. Terry can even be made to attack most NPCs, though killing innocents will lower his reputation and cause negative effects.
The top screen will almost always display the Professor in an isometric, purposely pixel-heavy art style. The bottom screen features painted backgrounds and many more colors. Despite this, Terry will sometimes enter the Professor's 16-bit world.
The touch screen can be used to control movement and navigate menus, though buttons can also be used. The only thing that the touch screen does that the controls cannot is peel off and apply decal stickers.
Contact is Wi-Fi enabled, though not for multiplayer. Instead, players simply trade friend codes, "make contact" with each other, and then save. Every player you make contact with will appear in a place called WiFisland as an NPC. Here, you can have conversations and get free items or stat boosts.
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Contact means to touch physically or to communicate with.
Contact could also mean:
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